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Finding the Fourth Proportional to 495,509.20, 683,898.59 and 323,127.90

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Solution

The fourth proportional to 495,509.20, 683,898.59 and 323,127.90 is: 445,979.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,509.20 : 683,898.59 = 323,127.90 : x
  2. Step 2: Convert to fraction form
    495,509.20/683,898.59 = 323,127.90/x
  3. Step 3: Cross multiply
    495,509.20x = 683,898.59 × 323,127.90
  4. Step 4: Simplify right side
    495,509.20x = 220,986,715,199.66
  5. Step 5: Solve for x
    x = 220,986,715,199.66/495,509.20
  6. Step 6: Final answer
    x = 445,979.04

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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.