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Finding the Fourth Proportional to 495,418.68, 683,663.49 and 280,577.52

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Solution

The fourth proportional to 495,418.68, 683,663.49 and 280,577.52 is: 387,188.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,418.68 : 683,663.49 = 280,577.52 : x
  2. Step 2: Convert to fraction form
    495,418.68/683,663.49 = 280,577.52/x
  3. Step 3: Cross multiply
    495,418.68x = 683,663.49 × 280,577.52
  4. Step 4: Simplify right side
    495,418.68x = 191,820,606,538.75
  5. Step 5: Solve for x
    x = 191,820,606,538.75/495,418.68
  6. Step 6: Final answer
    x = 387,188.89

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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.