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Finding the Fourth Proportional to 768,019.44, 1,059,869.88 and 428,502

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Solution

The fourth proportional to 768,019.44, 1,059,869.88 and 428,502 is: 591,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,019.44 : 1,059,869.88 = 428,502 : x
  2. Step 2: Convert to fraction form
    768,019.44/1,059,869.88 = 428,502/x
  3. Step 3: Cross multiply
    768,019.44x = 1,059,869.88 × 428,502
  4. Step 4: Simplify right side
    768,019.44x = 454,156,363,319.76
  5. Step 5: Solve for x
    x = 454,156,363,319.76/768,019.44
  6. Step 6: Final answer
    x = 591,334.46

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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.