Home / 717,022.17-989,485.20-394,737.75

Finding the Fourth Proportional to 717,022.17, 989,485.20 and 394,737.75

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Solution

The fourth proportional to 717,022.17, 989,485.20 and 394,737.75 is: 544,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,022.17 : 989,485.20 = 394,737.75 : x
  2. Step 2: Convert to fraction form
    717,022.17/989,485.20 = 394,737.75/x
  3. Step 3: Cross multiply
    717,022.17x = 989,485.20 × 394,737.75
  4. Step 4: Simplify right side
    717,022.17x = 390,587,161,506.30
  5. Step 5: Solve for x
    x = 390,587,161,506.30/717,022.17
  6. Step 6: Final answer
    x = 544,735.13

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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.