Home / 721,247.70-1,080,915.90-383,561.28

Finding the Fourth Proportional to 721,247.70, 1,080,915.90 and 383,561.28

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Solution

The fourth proportional to 721,247.70, 1,080,915.90 and 383,561.28 is: 574,833.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,247.70 : 1,080,915.90 = 383,561.28 : x
  2. Step 2: Convert to fraction form
    721,247.70/1,080,915.90 = 383,561.28/x
  3. Step 3: Cross multiply
    721,247.70x = 1,080,915.90 × 383,561.28
  4. Step 4: Simplify right side
    721,247.70x = 414,597,486,176.35
  5. Step 5: Solve for x
    x = 414,597,486,176.35/721,247.70
  6. Step 6: Final answer
    x = 574,833.70

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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.