Home / 649,276.20-972,164.70-509,308.20

Finding the Fourth Proportional to 649,276.20, 972,164.70 and 509,308.20

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Solution

The fourth proportional to 649,276.20, 972,164.70 and 509,308.20 is: 762,589.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,276.20 : 972,164.70 = 509,308.20 : x
  2. Step 2: Convert to fraction form
    649,276.20/972,164.70 = 509,308.20/x
  3. Step 3: Cross multiply
    649,276.20x = 972,164.70 × 509,308.20
  4. Step 4: Simplify right side
    649,276.20x = 495,131,453,460.54
  5. Step 5: Solve for x
    x = 495,131,453,460.54/649,276.20
  6. Step 6: Final answer
    x = 762,589.87

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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.