Home / 838,139.70-1,257,209.55-603,693.30

Finding the Fourth Proportional to 838,139.70, 1,257,209.55 and 603,693.30

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Solution

The fourth proportional to 838,139.70, 1,257,209.55 and 603,693.30 is: 905,539.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,139.70 : 1,257,209.55 = 603,693.30 : x
  2. Step 2: Convert to fraction form
    838,139.70/1,257,209.55 = 603,693.30/x
  3. Step 3: Cross multiply
    838,139.70x = 1,257,209.55 × 603,693.30
  4. Step 4: Simplify right side
    838,139.70x = 758,968,982,031.02
  5. Step 5: Solve for x
    x = 758,968,982,031.02/838,139.70
  6. Step 6: Final answer
    x = 905,539.95

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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.