Home / 861,436.71-1,292,442.80-381,599.33

Finding the Fourth Proportional to 861,436.71, 1,292,442.80 and 381,599.33

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Solution

The fourth proportional to 861,436.71, 1,292,442.80 and 381,599.33 is: 572,526.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,436.71 : 1,292,442.80 = 381,599.33 : x
  2. Step 2: Convert to fraction form
    861,436.71/1,292,442.80 = 381,599.33/x
  3. Step 3: Cross multiply
    861,436.71x = 1,292,442.80 × 381,599.33
  4. Step 4: Simplify right side
    861,436.71x = 493,195,298,173.11
  5. Step 5: Solve for x
    x = 493,195,298,173.11/861,436.71
  6. Step 6: Final answer
    x = 572,526.45

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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.