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Finding the Fourth Proportional to 657,260.80, 985,502.40 and 342,332.80

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Solution

The fourth proportional to 657,260.80, 985,502.40 and 342,332.80 is: 513,296.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,260.80 : 985,502.40 = 342,332.80 : x
  2. Step 2: Convert to fraction form
    657,260.80/985,502.40 = 342,332.80/x
  3. Step 3: Cross multiply
    657,260.80x = 985,502.40 × 342,332.80
  4. Step 4: Simplify right side
    657,260.80x = 337,369,795,998.72
  5. Step 5: Solve for x
    x = 337,369,795,998.72/657,260.80
  6. Step 6: Final answer
    x = 513,296.69

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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.