Home / 717,072.18-989,522.10-394,719.36

Finding the Fourth Proportional to 717,072.18, 989,522.10 and 394,719.36

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Solution

The fourth proportional to 717,072.18, 989,522.10 and 394,719.36 is: 544,692.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,072.18 : 989,522.10 = 394,719.36 : x
  2. Step 2: Convert to fraction form
    717,072.18/989,522.10 = 394,719.36/x
  3. Step 3: Cross multiply
    717,072.18x = 989,522.10 × 394,719.36
  4. Step 4: Simplify right side
    717,072.18x = 390,583,530,017.86
  5. Step 5: Solve for x
    x = 390,583,530,017.86/717,072.18
  6. Step 6: Final answer
    x = 544,692.07

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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.