Home / 713,454.52-1,068,755.88-428,989.30

Finding the Fourth Proportional to 713,454.52, 1,068,755.88 and 428,989.30

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Solution

The fourth proportional to 713,454.52, 1,068,755.88 and 428,989.30 is: 642,626.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,454.52 : 1,068,755.88 = 428,989.30 : x
  2. Step 2: Convert to fraction form
    713,454.52/1,068,755.88 = 428,989.30/x
  3. Step 3: Cross multiply
    713,454.52x = 1,068,755.88 × 428,989.30
  4. Step 4: Simplify right side
    713,454.52x = 458,484,836,832.08
  5. Step 5: Solve for x
    x = 458,484,836,832.08/713,454.52
  6. Step 6: Final answer
    x = 642,626.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.