Home / 1,539,648,934.20-2,309,473,401.30-390,791,590.20

Finding the Fourth Proportional to 1,539,648,934.20, 2,309,473,401.30 and 390,791,590.20

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Solution

The fourth proportional to 1,539,648,934.20, 2,309,473,401.30 and 390,791,590.20 is: 586,187,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539,648,934.20 : 2,309,473,401.30 = 390,791,590.20 : x
  2. Step 2: Convert to fraction form
    1,539,648,934.20/2,309,473,401.30 = 390,791,590.20/x
  3. Step 3: Cross multiply
    1,539,648,934.20x = 2,309,473,401.30 × 390,791,590.20
  4. Step 4: Simplify right side
    1,539,648,934.20x = 902,522,783,018,629,760
  5. Step 5: Solve for x
    x = 902,522,783,018,629,760/1,539,648,934.20
  6. Step 6: Final answer
    x = 586,187,385.30

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Half scale
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Double scale
Find fourth proportional to 1,539,648,935.20, 2,309,473,402.80 and 390,791,591.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.