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Finding the Fourth Proportional to 486,727.80, 730,091.70 and 345,010.20

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Solution

The fourth proportional to 486,727.80, 730,091.70 and 345,010.20 is: 517,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,727.80 : 730,091.70 = 345,010.20 : x
  2. Step 2: Convert to fraction form
    486,727.80/730,091.70 = 345,010.20/x
  3. Step 3: Cross multiply
    486,727.80x = 730,091.70 × 345,010.20
  4. Step 4: Simplify right side
    486,727.80x = 251,889,083,435.34
  5. Step 5: Solve for x
    x = 251,889,083,435.34/486,727.80
  6. Step 6: Final answer
    x = 517,515.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.