Home / 619,719.40-929,579.10-220,810.60

Finding the Fourth Proportional to 619,719.40, 929,579.10 and 220,810.60

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Solution

The fourth proportional to 619,719.40, 929,579.10 and 220,810.60 is: 331,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,719.40 : 929,579.10 = 220,810.60 : x
  2. Step 2: Convert to fraction form
    619,719.40/929,579.10 = 220,810.60/x
  3. Step 3: Cross multiply
    619,719.40x = 929,579.10 × 220,810.60
  4. Step 4: Simplify right side
    619,719.40x = 205,260,918,818.46
  5. Step 5: Solve for x
    x = 205,260,918,818.46/619,719.40
  6. Step 6: Final answer
    x = 331,215.90

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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.