Home / 1,539,649,346.20-2,309,474,019.30-390,792,002.20

Finding the Fourth Proportional to 1,539,649,346.20, 2,309,474,019.30 and 390,792,002.20

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Solution

The fourth proportional to 1,539,649,346.20, 2,309,474,019.30 and 390,792,002.20 is: 586,188,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539,649,346.20 : 2,309,474,019.30 = 390,792,002.20 : x
  2. Step 2: Convert to fraction form
    1,539,649,346.20/2,309,474,019.30 = 390,792,002.20/x
  3. Step 3: Cross multiply
    1,539,649,346.20x = 2,309,474,019.30 × 390,792,002.20
  4. Step 4: Simplify right side
    1,539,649,346.20x = 902,523,976,031,128,448
  5. Step 5: Solve for x
    x = 902,523,976,031,128,448/1,539,649,346.20
  6. Step 6: Final answer
    x = 586,188,003.30

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Double scale
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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.