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Finding the Fourth Proportional to 537,999.40, 806,999.10 and 398,031.40

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Solution

The fourth proportional to 537,999.40, 806,999.10 and 398,031.40 is: 597,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,999.40 : 806,999.10 = 398,031.40 : x
  2. Step 2: Convert to fraction form
    537,999.40/806,999.10 = 398,031.40/x
  3. Step 3: Cross multiply
    537,999.40x = 806,999.10 × 398,031.40
  4. Step 4: Simplify right side
    537,999.40x = 321,210,981,571.74
  5. Step 5: Solve for x
    x = 321,210,981,571.74/537,999.40
  6. Step 6: Final answer
    x = 597,047.10

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Similar ratio
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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.