Home / 768,276.30-1,060,321.61-428,815.02

Finding the Fourth Proportional to 768,276.30, 1,060,321.61 and 428,815.02

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Solution

The fourth proportional to 768,276.30, 1,060,321.61 and 428,815.02 is: 591,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,276.30 : 1,060,321.61 = 428,815.02 : x
  2. Step 2: Convert to fraction form
    768,276.30/1,060,321.61 = 428,815.02/x
  3. Step 3: Cross multiply
    768,276.30x = 1,060,321.61 × 428,815.02
  4. Step 4: Simplify right side
    768,276.30x = 454,681,832,398.58
  5. Step 5: Solve for x
    x = 454,681,832,398.58/768,276.30
  6. Step 6: Final answer
    x = 591,820.72

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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.