Home / 717,072.06-989,521.88-394,719.20

Finding the Fourth Proportional to 717,072.06, 989,521.88 and 394,719.20

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Solution

The fourth proportional to 717,072.06, 989,521.88 and 394,719.20 is: 544,691.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,072.06 : 989,521.88 = 394,719.20 : x
  2. Step 2: Convert to fraction form
    717,072.06/989,521.88 = 394,719.20/x
  3. Step 3: Cross multiply
    717,072.06x = 989,521.88 × 394,719.20
  4. Step 4: Simplify right side
    717,072.06x = 390,583,284,856.10
  5. Step 5: Solve for x
    x = 390,583,284,856.10/717,072.06
  6. Step 6: Final answer
    x = 544,691.82

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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.