Home / 729,125.60-1,091,938.80-354,711.20

Finding the Fourth Proportional to 729,125.60, 1,091,938.80 and 354,711.20

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Solution

The fourth proportional to 729,125.60, 1,091,938.80 and 354,711.20 is: 531,215.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,125.60 : 1,091,938.80 = 354,711.20 : x
  2. Step 2: Convert to fraction form
    729,125.60/1,091,938.80 = 354,711.20/x
  3. Step 3: Cross multiply
    729,125.60x = 1,091,938.80 × 354,711.20
  4. Step 4: Simplify right side
    729,125.60x = 387,322,922,074.56
  5. Step 5: Solve for x
    x = 387,322,922,074.56/729,125.60
  6. Step 6: Final answer
    x = 531,215.64

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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.