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Finding the Fourth Proportional to 521,970.88, 720,672.86 and 326,036.87

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Solution

The fourth proportional to 521,970.88, 720,672.86 and 326,036.87 is: 450,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,970.88 : 720,672.86 = 326,036.87 : x
  2. Step 2: Convert to fraction form
    521,970.88/720,672.86 = 326,036.87/x
  3. Step 3: Cross multiply
    521,970.88x = 720,672.86 × 326,036.87
  4. Step 4: Simplify right side
    521,970.88x = 234,965,923,568.35
  5. Step 5: Solve for x
    x = 234,965,923,568.35/521,970.88
  6. Step 6: Final answer
    x = 450,151.40

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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.