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Finding the Fourth Proportional to 531,947.80, 797,921.70 and 363,986.20

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Solution

The fourth proportional to 531,947.80, 797,921.70 and 363,986.20 is: 545,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,947.80 : 797,921.70 = 363,986.20 : x
  2. Step 2: Convert to fraction form
    531,947.80/797,921.70 = 363,986.20/x
  3. Step 3: Cross multiply
    531,947.80x = 797,921.70 × 363,986.20
  4. Step 4: Simplify right side
    531,947.80x = 290,432,487,480.54
  5. Step 5: Solve for x
    x = 290,432,487,480.54/531,947.80
  6. Step 6: Final answer
    x = 545,979.30

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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.