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Finding the Fourth Proportional to 663,049.68, 915,084.39 and 368,728.77

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Solution

The fourth proportional to 663,049.68, 915,084.39 and 368,728.77 is: 508,887.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,049.68 : 915,084.39 = 368,728.77 : x
  2. Step 2: Convert to fraction form
    663,049.68/915,084.39 = 368,728.77/x
  3. Step 3: Cross multiply
    663,049.68x = 915,084.39 × 368,728.77
  4. Step 4: Simplify right side
    663,049.68x = 337,417,941,570.90
  5. Step 5: Solve for x
    x = 337,417,941,570.90/663,049.68
  6. Step 6: Final answer
    x = 508,887.87

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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.