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Finding the Fourth Proportional to 713,774.52, 985,044.94 and 391,514.60

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Solution

The fourth proportional to 713,774.52, 985,044.94 and 391,514.60 is: 540,309.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,774.52 : 985,044.94 = 391,514.60 : x
  2. Step 2: Convert to fraction form
    713,774.52/985,044.94 = 391,514.60/x
  3. Step 3: Cross multiply
    713,774.52x = 985,044.94 × 391,514.60
  4. Step 4: Simplify right side
    713,774.52x = 385,659,475,666.12
  5. Step 5: Solve for x
    x = 385,659,475,666.12/713,774.52
  6. Step 6: Final answer
    x = 540,309.95

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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.