Home / 819,775.40-1,230,584.70-633,612.20

Finding the Fourth Proportional to 819,775.40, 1,230,584.70 and 633,612.20

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Solution

The fourth proportional to 819,775.40, 1,230,584.70 and 633,612.20 is: 951,130.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,775.40 : 1,230,584.70 = 633,612.20 : x
  2. Step 2: Convert to fraction form
    819,775.40/1,230,584.70 = 633,612.20/x
  3. Step 3: Cross multiply
    819,775.40x = 1,230,584.70 × 633,612.20
  4. Step 4: Simplify right side
    819,775.40x = 779,713,479,053.34
  5. Step 5: Solve for x
    x = 779,713,479,053.34/819,775.40
  6. Step 6: Final answer
    x = 951,130.61

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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.