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Finding the Fourth Proportional to 633,975.47, 874,975.86 and 392,335.87

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Solution

The fourth proportional to 633,975.47, 874,975.86 and 392,335.87 is: 541,479.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,975.47 : 874,975.86 = 392,335.87 : x
  2. Step 2: Convert to fraction form
    633,975.47/874,975.86 = 392,335.87/x
  3. Step 3: Cross multiply
    633,975.47x = 874,975.86 × 392,335.87
  4. Step 4: Simplify right side
    633,975.47x = 343,284,415,262.10
  5. Step 5: Solve for x
    x = 343,284,415,262.10/633,975.47
  6. Step 6: Final answer
    x = 541,479.02

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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.