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Finding the Fourth Proportional to 633,423.52, 873,793.16 and 391,628.80

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Solution

The fourth proportional to 633,423.52, 873,793.16 and 391,628.80 is: 540,242.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,423.52 : 873,793.16 = 391,628.80 : x
  2. Step 2: Convert to fraction form
    633,423.52/873,793.16 = 391,628.80/x
  3. Step 3: Cross multiply
    633,423.52x = 873,793.16 × 391,628.80
  4. Step 4: Simplify right side
    633,423.52x = 342,202,566,699.01
  5. Step 5: Solve for x
    x = 342,202,566,699.01/633,423.52
  6. Step 6: Final answer
    x = 540,242.91

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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.