Home / 861,431.76-1,292,412.36-441,002.88

Finding the Fourth Proportional to 861,431.76, 1,292,412.36 and 441,002.88

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Solution

The fourth proportional to 861,431.76, 1,292,412.36 and 441,002.88 is: 661,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,431.76 : 1,292,412.36 = 441,002.88 : x
  2. Step 2: Convert to fraction form
    861,431.76/1,292,412.36 = 441,002.88/x
  3. Step 3: Cross multiply
    861,431.76x = 1,292,412.36 × 441,002.88
  4. Step 4: Simplify right side
    861,431.76x = 569,957,572,907.60
  5. Step 5: Solve for x
    x = 569,957,572,907.60/861,431.76
  6. Step 6: Final answer
    x = 661,639.84

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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.