Home / 1,517,085.20-2,275,627.80-978,208.40

Finding the Fourth Proportional to 1,517,085.20, 2,275,627.80 and 978,208.40

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Solution

The fourth proportional to 1,517,085.20, 2,275,627.80 and 978,208.40 is: 1,467,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517,085.20 : 2,275,627.80 = 978,208.40 : x
  2. Step 2: Convert to fraction form
    1,517,085.20/2,275,627.80 = 978,208.40/x
  3. Step 3: Cross multiply
    1,517,085.20x = 2,275,627.80 × 978,208.40
  4. Step 4: Simplify right side
    1,517,085.20x = 2,226,038,229,233.52
  5. Step 5: Solve for x
    x = 2,226,038,229,233.52/1,517,085.20
  6. Step 6: Final answer
    x = 1,467,312.60

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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.