Home / 986,440.20-1,479,660.30-355,126.20

Finding the Fourth Proportional to 986,440.20, 1,479,660.30 and 355,126.20

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Solution

The fourth proportional to 986,440.20, 1,479,660.30 and 355,126.20 is: 532,689.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,440.20 : 1,479,660.30 = 355,126.20 : x
  2. Step 2: Convert to fraction form
    986,440.20/1,479,660.30 = 355,126.20/x
  3. Step 3: Cross multiply
    986,440.20x = 1,479,660.30 × 355,126.20
  4. Step 4: Simplify right side
    986,440.20x = 525,466,139,629.86
  5. Step 5: Solve for x
    x = 525,466,139,629.86/986,440.20
  6. Step 6: Final answer
    x = 532,689.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.