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Finding the Fourth Proportional to 495,433.88, 683,675.87 and 280,575.48

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Solution

The fourth proportional to 495,433.88, 683,675.87 and 280,575.48 is: 387,181.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,433.88 : 683,675.87 = 280,575.48 : x
  2. Step 2: Convert to fraction form
    495,433.88/683,675.87 = 280,575.48/x
  3. Step 3: Cross multiply
    495,433.88x = 683,675.87 × 280,575.48
  4. Step 4: Simplify right side
    495,433.88x = 191,822,683,986.79
  5. Step 5: Solve for x
    x = 191,822,683,986.79/495,433.88
  6. Step 6: Final answer
    x = 387,181.20

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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.