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Finding the Fourth Proportional to 545,321.66, 752,349.11 and 315,753.62

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Solution

The fourth proportional to 545,321.66, 752,349.11 and 315,753.62 is: 435,627.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,321.66 : 752,349.11 = 315,753.62 : x
  2. Step 2: Convert to fraction form
    545,321.66/752,349.11 = 315,753.62/x
  3. Step 3: Cross multiply
    545,321.66x = 752,349.11 × 315,753.62
  4. Step 4: Simplify right side
    545,321.66x = 237,556,949,645.77
  5. Step 5: Solve for x
    x = 237,556,949,645.77/545,321.66
  6. Step 6: Final answer
    x = 435,627.21

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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.