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Finding the Fourth Proportional to 745,950, 1,029,397.92 and 406,420.64

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Solution

The fourth proportional to 745,950, 1,029,397.92 and 406,420.64 is: 560,853.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,950 : 1,029,397.92 = 406,420.64 : x
  2. Step 2: Convert to fraction form
    745,950/1,029,397.92 = 406,420.64/x
  3. Step 3: Cross multiply
    745,950x = 1,029,397.92 × 406,420.64
  4. Step 4: Simplify right side
    745,950x = 418,368,561,461.07
  5. Step 5: Solve for x
    x = 418,368,561,461.07/745,950
  6. Step 6: Final answer
    x = 560,853.36

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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.