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Finding the Fourth Proportional to 656,643.20, 984,964.80 and 435,027.20

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Solution

The fourth proportional to 656,643.20, 984,964.80 and 435,027.20 is: 652,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,643.20 : 984,964.80 = 435,027.20 : x
  2. Step 2: Convert to fraction form
    656,643.20/984,964.80 = 435,027.20/x
  3. Step 3: Cross multiply
    656,643.20x = 984,964.80 × 435,027.20
  4. Step 4: Simplify right side
    656,643.20x = 428,486,479,042.56
  5. Step 5: Solve for x
    x = 428,486,479,042.56/656,643.20
  6. Step 6: Final answer
    x = 652,540.80

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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.