Home / 812,077.60-1,218,116.40-664,455.10

Finding the Fourth Proportional to 812,077.60, 1,218,116.40 and 664,455.10

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Solution

The fourth proportional to 812,077.60, 1,218,116.40 and 664,455.10 is: 996,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,077.60 : 1,218,116.40 = 664,455.10 : x
  2. Step 2: Convert to fraction form
    812,077.60/1,218,116.40 = 664,455.10/x
  3. Step 3: Cross multiply
    812,077.60x = 1,218,116.40 × 664,455.10
  4. Step 4: Simplify right side
    812,077.60x = 809,383,654,373.64
  5. Step 5: Solve for x
    x = 809,383,654,373.64/812,077.60
  6. Step 6: Final answer
    x = 996,682.65

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Double scale
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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.