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Finding the Fourth Proportional to 960,912.60, 1,440,159.30 and 487,728.60

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Solution

The fourth proportional to 960,912.60, 1,440,159.30 and 487,728.60 is: 730,978.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    960,912.60 : 1,440,159.30 = 487,728.60 : x
  2. Step 2: Convert to fraction form
    960,912.60/1,440,159.30 = 487,728.60/x
  3. Step 3: Cross multiply
    960,912.60x = 1,440,159.30 × 487,728.60
  4. Step 4: Simplify right side
    960,912.60x = 702,406,879,165.98
  5. Step 5: Solve for x
    x = 702,406,879,165.98/960,912.60
  6. Step 6: Final answer
    x = 730,978.95

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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.