Home / 1,039,897.20-1,556,735.40-978,380.40

Finding the Fourth Proportional to 1,039,897.20, 1,556,735.40 and 978,380.40

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Solution

The fourth proportional to 1,039,897.20, 1,556,735.40 and 978,380.40 is: 1,464,644.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,897.20 : 1,556,735.40 = 978,380.40 : x
  2. Step 2: Convert to fraction form
    1,039,897.20/1,556,735.40 = 978,380.40/x
  3. Step 3: Cross multiply
    1,039,897.20x = 1,556,735.40 × 978,380.40
  4. Step 4: Simplify right side
    1,039,897.20x = 1,523,079,403,346.16
  5. Step 5: Solve for x
    x = 1,523,079,403,346.16/1,039,897.20
  6. Step 6: Final answer
    x = 1,464,644.20

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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.