Home / 645,956.32-890,495.89-454,375.12

Finding the Fourth Proportional to 645,956.32, 890,495.89 and 454,375.12

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Solution

The fourth proportional to 645,956.32, 890,495.89 and 454,375.12 is: 626,387.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,956.32 : 890,495.89 = 454,375.12 : x
  2. Step 2: Convert to fraction form
    645,956.32/890,495.89 = 454,375.12/x
  3. Step 3: Cross multiply
    645,956.32x = 890,495.89 × 454,375.12
  4. Step 4: Simplify right side
    645,956.32x = 404,619,176,878.26
  5. Step 5: Solve for x
    x = 404,619,176,878.26/645,956.32
  6. Step 6: Final answer
    x = 626,387.83

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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.