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Finding the Fourth Proportional to 698,747.66, 964,305.98 and 392,920.32

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Solution

The fourth proportional to 698,747.66, 964,305.98 and 392,920.32 is: 542,249.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,747.66 : 964,305.98 = 392,920.32 : x
  2. Step 2: Convert to fraction form
    698,747.66/964,305.98 = 392,920.32/x
  3. Step 3: Cross multiply
    698,747.66x = 964,305.98 × 392,920.32
  4. Step 4: Simplify right side
    698,747.66x = 378,895,414,239.51
  5. Step 5: Solve for x
    x = 378,895,414,239.51/698,747.66
  6. Step 6: Final answer
    x = 542,249.28

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1.5x scale

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.