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Finding the Fourth Proportional to 495,517.68, 683,798.76 and 280,677.60

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Solution

The fourth proportional to 495,517.68, 683,798.76 and 280,677.60 is: 387,326.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,517.68 : 683,798.76 = 280,677.60 : x
  2. Step 2: Convert to fraction form
    495,517.68/683,798.76 = 280,677.60/x
  3. Step 3: Cross multiply
    495,517.68x = 683,798.76 × 280,677.60
  4. Step 4: Simplify right side
    495,517.68x = 191,926,994,839.78
  5. Step 5: Solve for x
    x = 191,926,994,839.78/495,517.68
  6. Step 6: Final answer
    x = 387,326.23

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1.5x scale

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.