Home / 665,787.47-998,932.59-399,733.43

Finding the Fourth Proportional to 665,787.47, 998,932.59 and 399,733.43

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Solution

The fourth proportional to 665,787.47, 998,932.59 and 399,733.43 is: 599,751.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,787.47 : 998,932.59 = 399,733.43 : x
  2. Step 2: Convert to fraction form
    665,787.47/998,932.59 = 399,733.43/x
  3. Step 3: Cross multiply
    665,787.47x = 998,932.59 × 399,733.43
  4. Step 4: Simplify right side
    665,787.47x = 399,306,745,544.82
  5. Step 5: Solve for x
    x = 399,306,745,544.82/665,787.47
  6. Step 6: Final answer
    x = 599,751.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.