Home / 819,021.70-1,228,532.55-606,445.30

Finding the Fourth Proportional to 819,021.70, 1,228,532.55 and 606,445.30

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Solution

The fourth proportional to 819,021.70, 1,228,532.55 and 606,445.30 is: 909,667.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,021.70 : 1,228,532.55 = 606,445.30 : x
  2. Step 2: Convert to fraction form
    819,021.70/1,228,532.55 = 606,445.30/x
  3. Step 3: Cross multiply
    819,021.70x = 1,228,532.55 × 606,445.30
  4. Step 4: Simplify right side
    819,021.70x = 745,037,790,844.52
  5. Step 5: Solve for x
    x = 745,037,790,844.52/819,021.70
  6. Step 6: Final answer
    x = 909,667.95

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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.