Home / 664,719.18-996,869.59-215,335.77

Finding the Fourth Proportional to 664,719.18, 996,869.59 and 215,335.77

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Solution

The fourth proportional to 664,719.18, 996,869.59 and 215,335.77 is: 322,935.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,719.18 : 996,869.59 = 215,335.77 : x
  2. Step 2: Convert to fraction form
    664,719.18/996,869.59 = 215,335.77/x
  3. Step 3: Cross multiply
    664,719.18x = 996,869.59 × 215,335.77
  4. Step 4: Simplify right side
    664,719.18x = 214,661,680,752.23
  5. Step 5: Solve for x
    x = 214,661,680,752.23/664,719.18
  6. Step 6: Final answer
    x = 322,935.89

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Half scale
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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.