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Finding the Fourth Proportional to 657,069.90, 985,374.45 and 341,421.90

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Solution

The fourth proportional to 657,069.90, 985,374.45 and 341,421.90 is: 512,013.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,069.90 : 985,374.45 = 341,421.90 : x
  2. Step 2: Convert to fraction form
    657,069.90/985,374.45 = 341,421.90/x
  3. Step 3: Cross multiply
    657,069.90x = 985,374.45 × 341,421.90
  4. Step 4: Simplify right side
    657,069.90x = 336,428,416,930.46
  5. Step 5: Solve for x
    x = 336,428,416,930.46/657,069.90
  6. Step 6: Final answer
    x = 512,013.13

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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.