Home / 819,557.30-1,230,334.35-520,037.30

Finding the Fourth Proportional to 819,557.30, 1,230,334.35 and 520,037.30

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Solution

The fourth proportional to 819,557.30, 1,230,334.35 and 520,037.30 is: 780,689.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,557.30 : 1,230,334.35 = 520,037.30 : x
  2. Step 2: Convert to fraction form
    819,557.30/1,230,334.35 = 520,037.30/x
  3. Step 3: Cross multiply
    819,557.30x = 1,230,334.35 × 520,037.30
  4. Step 4: Simplify right side
    819,557.30x = 639,819,753,471.26
  5. Step 5: Solve for x
    x = 639,819,753,471.26/819,557.30
  6. Step 6: Final answer
    x = 780,689.47

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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.