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Finding the Fourth Proportional to 558,275.04, 770,619.96 and 331,920

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Solution

The fourth proportional to 558,275.04, 770,619.96 and 331,920 is: 458,168.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,275.04 : 770,619.96 = 331,920 : x
  2. Step 2: Convert to fraction form
    558,275.04/770,619.96 = 331,920/x
  3. Step 3: Cross multiply
    558,275.04x = 770,619.96 × 331,920
  4. Step 4: Simplify right side
    558,275.04x = 255,784,177,123.20
  5. Step 5: Solve for x
    x = 255,784,177,123.20/558,275.04
  6. Step 6: Final answer
    x = 458,168.75

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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.