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Finding the Fourth Proportional to 718,680.52, 991,281.84 and 582,720.20

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Solution

The fourth proportional to 718,680.52, 991,281.84 and 582,720.20 is: 803,750.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,680.52 : 991,281.84 = 582,720.20 : x
  2. Step 2: Convert to fraction form
    718,680.52/991,281.84 = 582,720.20/x
  3. Step 3: Cross multiply
    718,680.52x = 991,281.84 × 582,720.20
  4. Step 4: Simplify right side
    718,680.52x = 577,639,952,061.17
  5. Step 5: Solve for x
    x = 577,639,952,061.17/718,680.52
  6. Step 6: Final answer
    x = 803,750.67

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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.