Home / 1,111,272.20-1,666,264.62-978,419.24

Finding the Fourth Proportional to 1,111,272.20, 1,666,264.62 and 978,419.24

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Solution

The fourth proportional to 1,111,272.20, 1,666,264.62 and 978,419.24 is: 1,467,062.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,272.20 : 1,666,264.62 = 978,419.24 : x
  2. Step 2: Convert to fraction form
    1,111,272.20/1,666,264.62 = 978,419.24/x
  3. Step 3: Cross multiply
    1,111,272.20x = 1,666,264.62 × 978,419.24
  4. Step 4: Simplify right side
    1,111,272.20x = 1,630,305,363,139.29
  5. Step 5: Solve for x
    x = 1,630,305,363,139.29/1,111,272.20
  6. Step 6: Final answer
    x = 1,467,062.13

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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.