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Finding the Fourth Proportional to 657,355.20, 985,456.80 and 446,308.80

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Solution

The fourth proportional to 657,355.20, 985,456.80 and 446,308.80 is: 669,072.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,355.20 : 985,456.80 = 446,308.80 : x
  2. Step 2: Convert to fraction form
    657,355.20/985,456.80 = 446,308.80/x
  3. Step 3: Cross multiply
    657,355.20x = 985,456.80 × 446,308.80
  4. Step 4: Simplify right side
    657,355.20x = 439,818,041,859.84
  5. Step 5: Solve for x
    x = 439,818,041,859.84/657,355.20
  6. Step 6: Final answer
    x = 669,072.13

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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.