Home / 915,938.20-1,373,907.30-418,274.20

Finding the Fourth Proportional to 915,938.20, 1,373,907.30 and 418,274.20

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Solution

The fourth proportional to 915,938.20, 1,373,907.30 and 418,274.20 is: 627,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,938.20 : 1,373,907.30 = 418,274.20 : x
  2. Step 2: Convert to fraction form
    915,938.20/1,373,907.30 = 418,274.20/x
  3. Step 3: Cross multiply
    915,938.20x = 1,373,907.30 × 418,274.20
  4. Step 4: Simplify right side
    915,938.20x = 574,669,976,781.66
  5. Step 5: Solve for x
    x = 574,669,976,781.66/915,938.20
  6. Step 6: Final answer
    x = 627,411.30

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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.