Home / 1,039,807.20-1,556,600.40-978,290.40

Finding the Fourth Proportional to 1,039,807.20, 1,556,600.40 and 978,290.40

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Solution

The fourth proportional to 1,039,807.20, 1,556,600.40 and 978,290.40 is: 1,464,509.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,807.20 : 1,556,600.40 = 978,290.40 : x
  2. Step 2: Convert to fraction form
    1,039,807.20/1,556,600.40 = 978,290.40/x
  3. Step 3: Cross multiply
    1,039,807.20x = 1,556,600.40 × 978,290.40
  4. Step 4: Simplify right side
    1,039,807.20x = 1,522,807,227,956.16
  5. Step 5: Solve for x
    x = 1,522,807,227,956.16/1,039,807.20
  6. Step 6: Final answer
    x = 1,464,509.22

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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.