Home / 711,026,045.11-981,217,382.61-397,765,490.46

Finding the Fourth Proportional to 711,026,045.11, 981,217,382.61 and 397,765,490.46

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Solution

The fourth proportional to 711,026,045.11, 981,217,382.61 and 397,765,490.46 is: 548,917,182.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,026,045.11 : 981,217,382.61 = 397,765,490.46 : x
  2. Step 2: Convert to fraction form
    711,026,045.11/981,217,382.61 = 397,765,490.46/x
  3. Step 3: Cross multiply
    711,026,045.11x = 981,217,382.61 × 397,765,490.46
  4. Step 4: Simplify right side
    711,026,045.11x = 390,294,413,441,744,128
  5. Step 5: Solve for x
    x = 390,294,413,441,744,128/711,026,045.11
  6. Step 6: Final answer
    x = 548,917,182.61

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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.