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Finding the Fourth Proportional to 768,252.76, 1,060,062.02 and 428,720.20

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Solution

The fourth proportional to 768,252.76, 1,060,062.02 and 428,720.20 is: 591,563.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,252.76 : 1,060,062.02 = 428,720.20 : x
  2. Step 2: Convert to fraction form
    768,252.76/1,060,062.02 = 428,720.20/x
  3. Step 3: Cross multiply
    768,252.76x = 1,060,062.02 × 428,720.20
  4. Step 4: Simplify right side
    768,252.76x = 454,470,001,226.80
  5. Step 5: Solve for x
    x = 454,470,001,226.80/768,252.76
  6. Step 6: Final answer
    x = 591,563.12

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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.