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Finding the Fourth Proportional to 657,487.60, 985,939.80 and 302,610.40

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Solution

The fourth proportional to 657,487.60, 985,939.80 and 302,610.40 is: 453,781.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,487.60 : 985,939.80 = 302,610.40 : x
  2. Step 2: Convert to fraction form
    657,487.60/985,939.80 = 302,610.40/x
  3. Step 3: Cross multiply
    657,487.60x = 985,939.80 × 302,610.40
  4. Step 4: Simplify right side
    657,487.60x = 298,355,637,253.92
  5. Step 5: Solve for x
    x = 298,355,637,253.92/657,487.60
  6. Step 6: Final answer
    x = 453,781.39

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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.