Home / 725,153.20-1,087,729.80-458,047.60

Finding the Fourth Proportional to 725,153.20, 1,087,729.80 and 458,047.60

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Solution

The fourth proportional to 725,153.20, 1,087,729.80 and 458,047.60 is: 687,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,153.20 : 1,087,729.80 = 458,047.60 : x
  2. Step 2: Convert to fraction form
    725,153.20/1,087,729.80 = 458,047.60/x
  3. Step 3: Cross multiply
    725,153.20x = 1,087,729.80 × 458,047.60
  4. Step 4: Simplify right side
    725,153.20x = 498,232,024,338.48
  5. Step 5: Solve for x
    x = 498,232,024,338.48/725,153.20
  6. Step 6: Final answer
    x = 687,071.40

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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.