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Finding the Fourth Proportional to 500,694, 690,973.92 and 274,354.08

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Solution

The fourth proportional to 500,694, 690,973.92 and 274,354.08 is: 378,617.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,694 : 690,973.92 = 274,354.08 : x
  2. Step 2: Convert to fraction form
    500,694/690,973.92 = 274,354.08/x
  3. Step 3: Cross multiply
    500,694x = 690,973.92 × 274,354.08
  4. Step 4: Simplify right side
    500,694x = 189,571,514,125.59
  5. Step 5: Solve for x
    x = 189,571,514,125.59/500,694
  6. Step 6: Final answer
    x = 378,617.51

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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.