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Finding the Fourth Proportional to 768,242.76, 1,060,175.88 and 428,710.92

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Solution

The fourth proportional to 768,242.76, 1,060,175.88 and 428,710.92 is: 591,621.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,242.76 : 1,060,175.88 = 428,710.92 : x
  2. Step 2: Convert to fraction form
    768,242.76/1,060,175.88 = 428,710.92/x
  3. Step 3: Cross multiply
    768,242.76x = 1,060,175.88 × 428,710.92
  4. Step 4: Simplify right side
    768,242.76x = 454,508,976,876.61
  5. Step 5: Solve for x
    x = 454,508,976,876.61/768,242.76
  6. Step 6: Final answer
    x = 591,621.56

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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.