Home / 718,541.73-991,573.78-396,281.61

Finding the Fourth Proportional to 718,541.73, 991,573.78 and 396,281.61

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Solution

The fourth proportional to 718,541.73, 991,573.78 and 396,281.61 is: 546,861.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,541.73 : 991,573.78 = 396,281.61 : x
  2. Step 2: Convert to fraction form
    718,541.73/991,573.78 = 396,281.61/x
  3. Step 3: Cross multiply
    718,541.73x = 991,573.78 × 396,281.61
  4. Step 4: Simplify right side
    718,541.73x = 392,942,453,972.19
  5. Step 5: Solve for x
    x = 392,942,453,972.19/718,541.73
  6. Step 6: Final answer
    x = 546,861.01

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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.