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Finding the Fourth Proportional to 574,341.01, 861,511.71 and 258,428.86

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Solution

The fourth proportional to 574,341.01, 861,511.71 and 258,428.86 is: 387,643.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,341.01 : 861,511.71 = 258,428.86 : x
  2. Step 2: Convert to fraction form
    574,341.01/861,511.71 = 258,428.86/x
  3. Step 3: Cross multiply
    574,341.01x = 861,511.71 × 258,428.86
  4. Step 4: Simplify right side
    574,341.01x = 222,639,489,091.95
  5. Step 5: Solve for x
    x = 222,639,489,091.95/574,341.01
  6. Step 6: Final answer
    x = 387,643.38

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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.