Home / 747,540.39-1,031,605.47-408,008.64

Finding the Fourth Proportional to 747,540.39, 1,031,605.47 and 408,008.64

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Solution

The fourth proportional to 747,540.39, 1,031,605.47 and 408,008.64 is: 563,051.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,540.39 : 1,031,605.47 = 408,008.64 : x
  2. Step 2: Convert to fraction form
    747,540.39/1,031,605.47 = 408,008.64/x
  3. Step 3: Cross multiply
    747,540.39x = 1,031,605.47 × 408,008.64
  4. Step 4: Simplify right side
    747,540.39x = 420,903,948,699.78
  5. Step 5: Solve for x
    x = 420,903,948,699.78/747,540.39
  6. Step 6: Final answer
    x = 563,051.78

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1.5x scale

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.