Home / 1,040,123.20-1,557,074.40-978,606.40

Finding the Fourth Proportional to 1,040,123.20, 1,557,074.40 and 978,606.40

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Solution

The fourth proportional to 1,040,123.20, 1,557,074.40 and 978,606.40 is: 1,464,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,123.20 : 1,557,074.40 = 978,606.40 : x
  2. Step 2: Convert to fraction form
    1,040,123.20/1,557,074.40 = 978,606.40/x
  3. Step 3: Cross multiply
    1,040,123.20x = 1,557,074.40 × 978,606.40
  4. Step 4: Simplify right side
    1,040,123.20x = 1,523,762,973,116.16
  5. Step 5: Solve for x
    x = 1,523,762,973,116.16/1,040,123.20
  6. Step 6: Final answer
    x = 1,464,983.16

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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.