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Finding the Fourth Proportional to 693,073.12, 956,440.80 and 375,121.12

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Solution

The fourth proportional to 693,073.12, 956,440.80 and 375,121.12 is: 517,667.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,073.12 : 956,440.80 = 375,121.12 : x
  2. Step 2: Convert to fraction form
    693,073.12/956,440.80 = 375,121.12/x
  3. Step 3: Cross multiply
    693,073.12x = 956,440.80 × 375,121.12
  4. Step 4: Simplify right side
    693,073.12x = 358,781,144,109.70
  5. Step 5: Solve for x
    x = 358,781,144,109.70/693,073.12
  6. Step 6: Final answer
    x = 517,667.09

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Similar ratio
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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.