Home / 711,375,207.54-981,676,702.11-393,849,605.10

Finding the Fourth Proportional to 711,375,207.54, 981,676,702.11 and 393,849,605.10

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Solution

The fourth proportional to 711,375,207.54, 981,676,702.11 and 393,849,605.10 is: 543,500,781.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,375,207.54 : 981,676,702.11 = 393,849,605.10 : x
  2. Step 2: Convert to fraction form
    711,375,207.54/981,676,702.11 = 393,849,605.10/x
  3. Step 3: Cross multiply
    711,375,207.54x = 981,676,702.11 × 393,849,605.10
  4. Step 4: Simplify right side
    711,375,207.54x = 386,632,981,461,893,888
  5. Step 5: Solve for x
    x = 386,632,981,461,893,888/711,375,207.54
  6. Step 6: Final answer
    x = 543,500,781.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.