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Finding the Fourth Proportional to 495,507.70, 683,896.52 and 323,126.40

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Solution

The fourth proportional to 495,507.70, 683,896.52 and 323,126.40 is: 445,976.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,507.70 : 683,896.52 = 323,126.40 : x
  2. Step 2: Convert to fraction form
    495,507.70/683,896.52 = 323,126.40/x
  3. Step 3: Cross multiply
    495,507.70x = 683,896.52 × 323,126.40
  4. Step 4: Simplify right side
    495,507.70x = 220,985,020,480.13
  5. Step 5: Solve for x
    x = 220,985,020,480.13/495,507.70
  6. Step 6: Final answer
    x = 445,976.97

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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.