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Finding the Fourth Proportional to 869,876,641.80, 1,304,814,962.70 and 482,893,115.40

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Solution

The fourth proportional to 869,876,641.80, 1,304,814,962.70 and 482,893,115.40 is: 724,339,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,876,641.80 : 1,304,814,962.70 = 482,893,115.40 : x
  2. Step 2: Convert to fraction form
    869,876,641.80/1,304,814,962.70 = 482,893,115.40/x
  3. Step 3: Cross multiply
    869,876,641.80x = 1,304,814,962.70 × 482,893,115.40
  4. Step 4: Simplify right side
    869,876,641.80x = 630,086,162,358,737,792
  5. Step 5: Solve for x
    x = 630,086,162,358,737,792/869,876,641.80
  6. Step 6: Final answer
    x = 724,339,673.10

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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.