Home / 717,184.20-989,706.18-394,887.72

Finding the Fourth Proportional to 717,184.20, 989,706.18 and 394,887.72

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Solution

The fourth proportional to 717,184.20, 989,706.18 and 394,887.72 is: 544,940.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,184.20 : 989,706.18 = 394,887.72 : x
  2. Step 2: Convert to fraction form
    717,184.20/989,706.18 = 394,887.72/x
  3. Step 3: Cross multiply
    717,184.20x = 989,706.18 × 394,887.72
  4. Step 4: Simplify right side
    717,184.20x = 390,822,816,890.11
  5. Step 5: Solve for x
    x = 390,822,816,890.11/717,184.20
  6. Step 6: Final answer
    x = 544,940.64

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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.