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Finding the Fourth Proportional to 495,419.90, 683,667.84 and 291,483.97

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Solution

The fourth proportional to 495,419.90, 683,667.84 and 291,483.97 is: 402,241.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,419.90 : 683,667.84 = 291,483.97 : x
  2. Step 2: Convert to fraction form
    495,419.90/683,667.84 = 291,483.97/x
  3. Step 3: Cross multiply
    495,419.90x = 683,667.84 × 291,483.97
  4. Step 4: Simplify right side
    495,419.90x = 199,278,215,548.42
  5. Step 5: Solve for x
    x = 199,278,215,548.42/495,419.90
  6. Step 6: Final answer
    x = 402,241.04

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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.