Home / 782,221.28-1,079,473.72-480,415.28

Finding the Fourth Proportional to 782,221.28, 1,079,473.72 and 480,415.28

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Solution

The fourth proportional to 782,221.28, 1,079,473.72 and 480,415.28 is: 662,978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,221.28 : 1,079,473.72 = 480,415.28 : x
  2. Step 2: Convert to fraction form
    782,221.28/1,079,473.72 = 480,415.28/x
  3. Step 3: Cross multiply
    782,221.28x = 1,079,473.72 × 480,415.28
  4. Step 4: Simplify right side
    782,221.28x = 518,595,669,446.44
  5. Step 5: Solve for x
    x = 518,595,669,446.44/782,221.28
  6. Step 6: Final answer
    x = 662,978.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.