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Finding the Fourth Proportional to 495,410.52, 683,708.68 and 280,588.80

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Solution

The fourth proportional to 495,410.52, 683,708.68 and 280,588.80 is: 387,236.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,410.52 : 683,708.68 = 280,588.80 : x
  2. Step 2: Convert to fraction form
    495,410.52/683,708.68 = 280,588.80/x
  3. Step 3: Cross multiply
    495,410.52x = 683,708.68 × 280,588.80
  4. Step 4: Simplify right side
    495,410.52x = 191,840,994,805.40
  5. Step 5: Solve for x
    x = 191,840,994,805.40/495,410.52
  6. Step 6: Final answer
    x = 387,236.42

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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.