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Finding the Fourth Proportional to 657,193.20, 987,863.40 and 607,426.80

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Solution

The fourth proportional to 657,193.20, 987,863.40 and 607,426.80 is: 913,056.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,193.20 : 987,863.40 = 607,426.80 : x
  2. Step 2: Convert to fraction form
    657,193.20/987,863.40 = 607,426.80/x
  3. Step 3: Cross multiply
    657,193.20x = 987,863.40 × 607,426.80
  4. Step 4: Simplify right side
    657,193.20x = 600,054,703,899.12
  5. Step 5: Solve for x
    x = 600,054,703,899.12/657,193.20
  6. Step 6: Final answer
    x = 913,056.78

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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.