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Finding the Fourth Proportional to 495,321.52, 683,551.02 and 280,455.52

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Solution

The fourth proportional to 495,321.52, 683,551.02 and 280,455.52 is: 387,032.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,321.52 : 683,551.02 = 280,455.52 : x
  2. Step 2: Convert to fraction form
    495,321.52/683,551.02 = 280,455.52/x
  3. Step 3: Cross multiply
    495,321.52x = 683,551.02 × 280,455.52
  4. Step 4: Simplify right side
    495,321.52x = 191,705,656,760.63
  5. Step 5: Solve for x
    x = 191,705,656,760.63/495,321.52
  6. Step 6: Final answer
    x = 387,032.76

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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.