Home / 645,469.04-890,778.83-358,982.97

Finding the Fourth Proportional to 645,469.04, 890,778.83 and 358,982.97

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Solution

The fourth proportional to 645,469.04, 890,778.83 and 358,982.97 is: 495,414.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,469.04 : 890,778.83 = 358,982.97 : x
  2. Step 2: Convert to fraction form
    645,469.04/890,778.83 = 358,982.97/x
  3. Step 3: Cross multiply
    645,469.04x = 890,778.83 × 358,982.97
  4. Step 4: Simplify right side
    645,469.04x = 319,774,428,211.61
  5. Step 5: Solve for x
    x = 319,774,428,211.61/645,469.04
  6. Step 6: Final answer
    x = 495,414.05

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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.