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Finding the Fourth Proportional to 399,233.70, 598,850.55 and 392,672.70

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Solution

The fourth proportional to 399,233.70, 598,850.55 and 392,672.70 is: 589,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,233.70 : 598,850.55 = 392,672.70 : x
  2. Step 2: Convert to fraction form
    399,233.70/598,850.55 = 392,672.70/x
  3. Step 3: Cross multiply
    399,233.70x = 598,850.55 × 392,672.70
  4. Step 4: Simplify right side
    399,233.70x = 235,152,262,364.99
  5. Step 5: Solve for x
    x = 235,152,262,364.99/399,233.70
  6. Step 6: Final answer
    x = 589,009.05

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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.