Home / 1,040,085.40-1,560,128.10-409,019.80

Finding the Fourth Proportional to 1,040,085.40, 1,560,128.10 and 409,019.80

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Solution

The fourth proportional to 1,040,085.40, 1,560,128.10 and 409,019.80 is: 613,529.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,085.40 : 1,560,128.10 = 409,019.80 : x
  2. Step 2: Convert to fraction form
    1,040,085.40/1,560,128.10 = 409,019.80/x
  3. Step 3: Cross multiply
    1,040,085.40x = 1,560,128.10 × 409,019.80
  4. Step 4: Simplify right side
    1,040,085.40x = 638,123,283,436.38
  5. Step 5: Solve for x
    x = 638,123,283,436.38/1,040,085.40
  6. Step 6: Final answer
    x = 613,529.70

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Half scale
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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.