Home / 731,215.60-1,097,471.40-431,321.20

Finding the Fourth Proportional to 731,215.60, 1,097,471.40 and 431,321.20

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Solution

The fourth proportional to 731,215.60, 1,097,471.40 and 431,321.20 is: 647,364.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,215.60 : 1,097,471.40 = 431,321.20 : x
  2. Step 2: Convert to fraction form
    731,215.60/1,097,471.40 = 431,321.20/x
  3. Step 3: Cross multiply
    731,215.60x = 1,097,471.40 × 431,321.20
  4. Step 4: Simplify right side
    731,215.60x = 473,362,681,213.68
  5. Step 5: Solve for x
    x = 473,362,681,213.68/731,215.60
  6. Step 6: Final answer
    x = 647,364.03

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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.