Home / 819,556.30-1,230,332.85-520,036.30

Finding the Fourth Proportional to 819,556.30, 1,230,332.85 and 520,036.30

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Solution

The fourth proportional to 819,556.30, 1,230,332.85 and 520,036.30 is: 780,687.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,556.30 : 1,230,332.85 = 520,036.30 : x
  2. Step 2: Convert to fraction form
    819,556.30/1,230,332.85 = 520,036.30/x
  3. Step 3: Cross multiply
    819,556.30x = 1,230,332.85 × 520,036.30
  4. Step 4: Simplify right side
    819,556.30x = 639,817,743,082.46
  5. Step 5: Solve for x
    x = 639,817,743,082.46/819,556.30
  6. Step 6: Final answer
    x = 780,687.97

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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.