Home / 1,040,365.10-1,560,158.85-409,148.30

Finding the Fourth Proportional to 1,040,365.10, 1,560,158.85 and 409,148.30

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Solution

The fourth proportional to 1,040,365.10, 1,560,158.85 and 409,148.30 is: 613,569.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,365.10 : 1,560,158.85 = 409,148.30 : x
  2. Step 2: Convert to fraction form
    1,040,365.10/1,560,158.85 = 409,148.30/x
  3. Step 3: Cross multiply
    1,040,365.10x = 1,560,158.85 × 409,148.30
  4. Step 4: Simplify right side
    1,040,365.10x = 638,336,341,207.46
  5. Step 5: Solve for x
    x = 638,336,341,207.46/1,040,365.10
  6. Step 6: Final answer
    x = 613,569.55

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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.