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Finding the Fourth Proportional to 768,309.30, 1,060,373.70 and 428,799.42

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Solution

The fourth proportional to 768,309.30, 1,060,373.70 and 428,799.42 is: 591,802.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,309.30 : 1,060,373.70 = 428,799.42 : x
  2. Step 2: Convert to fraction form
    768,309.30/1,060,373.70 = 428,799.42/x
  3. Step 3: Cross multiply
    768,309.30x = 1,060,373.70 × 428,799.42
  4. Step 4: Simplify right side
    768,309.30x = 454,687,627,543.25
  5. Step 5: Solve for x
    x = 454,687,627,543.25/768,309.30
  6. Step 6: Final answer
    x = 591,802.84

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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.