Home / 1,429,272,030.20-2,143,908,045.30-509,178,385.40

Finding the Fourth Proportional to 1,429,272,030.20, 2,143,908,045.30 and 509,178,385.40

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Solution

The fourth proportional to 1,429,272,030.20, 2,143,908,045.30 and 509,178,385.40 is: 763,767,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,272,030.20 : 2,143,908,045.30 = 509,178,385.40 : x
  2. Step 2: Convert to fraction form
    1,429,272,030.20/2,143,908,045.30 = 509,178,385.40/x
  3. Step 3: Cross multiply
    1,429,272,030.20x = 2,143,908,045.30 × 509,178,385.40
  4. Step 4: Simplify right side
    1,429,272,030.20x = 1,091,631,636,951,923,968
  5. Step 5: Solve for x
    x = 1,091,631,636,951,923,968/1,429,272,030.20
  6. Step 6: Final answer
    x = 763,767,578.10

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Double scale
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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.