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Finding the Fourth Proportional to 551,391.40, 827,864.70 and 341,439.40

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Solution

The fourth proportional to 551,391.40, 827,864.70 and 341,439.40 is: 512,640.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,391.40 : 827,864.70 = 341,439.40 : x
  2. Step 2: Convert to fraction form
    551,391.40/827,864.70 = 341,439.40/x
  3. Step 3: Cross multiply
    551,391.40x = 827,864.70 × 341,439.40
  4. Step 4: Simplify right side
    551,391.40x = 282,665,626,449.18
  5. Step 5: Solve for x
    x = 282,665,626,449.18/551,391.40
  6. Step 6: Final answer
    x = 512,640.62

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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.