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Finding the Fourth Proportional to 663,284.88, 915,221.07 and 372,857.76

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Solution

The fourth proportional to 663,284.88, 915,221.07 and 372,857.76 is: 514,480.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,284.88 : 915,221.07 = 372,857.76 : x
  2. Step 2: Convert to fraction form
    663,284.88/915,221.07 = 372,857.76/x
  3. Step 3: Cross multiply
    663,284.88x = 915,221.07 × 372,857.76
  4. Step 4: Simplify right side
    663,284.88x = 341,247,278,065.00
  5. Step 5: Solve for x
    x = 341,247,278,065.00/663,284.88
  6. Step 6: Final answer
    x = 514,480.71

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1.5x scale

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.