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Finding the Fourth Proportional to 657,993.32, 907,976.10 and 386,032.76

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Solution

The fourth proportional to 657,993.32, 907,976.10 and 386,032.76 is: 532,693.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,993.32 : 907,976.10 = 386,032.76 : x
  2. Step 2: Convert to fraction form
    657,993.32/907,976.10 = 386,032.76/x
  3. Step 3: Cross multiply
    657,993.32x = 907,976.10 × 386,032.76
  4. Step 4: Simplify right side
    657,993.32x = 350,508,519,897.04
  5. Step 5: Solve for x
    x = 350,508,519,897.04/657,993.32
  6. Step 6: Final answer
    x = 532,693.13

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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.