Home / 1,040,478.10-1,560,717.15-978,270.10

Finding the Fourth Proportional to 1,040,478.10, 1,560,717.15 and 978,270.10

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Solution

The fourth proportional to 1,040,478.10, 1,560,717.15 and 978,270.10 is: 1,467,405.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,478.10 : 1,560,717.15 = 978,270.10 : x
  2. Step 2: Convert to fraction form
    1,040,478.10/1,560,717.15 = 978,270.10/x
  3. Step 3: Cross multiply
    1,040,478.10x = 1,560,717.15 × 978,270.10
  4. Step 4: Simplify right side
    1,040,478.10x = 1,526,802,922,402.22
  5. Step 5: Solve for x
    x = 1,526,802,922,402.22/1,040,478.10
  6. Step 6: Final answer
    x = 1,467,405.15

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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.