Home / 1,215,008.10-1,822,512.15-978,812.10

Finding the Fourth Proportional to 1,215,008.10, 1,822,512.15 and 978,812.10

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Solution

The fourth proportional to 1,215,008.10, 1,822,512.15 and 978,812.10 is: 1,468,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,008.10 : 1,822,512.15 = 978,812.10 : x
  2. Step 2: Convert to fraction form
    1,215,008.10/1,822,512.15 = 978,812.10/x
  3. Step 3: Cross multiply
    1,215,008.10x = 1,822,512.15 × 978,812.10
  4. Step 4: Simplify right side
    1,215,008.10x = 1,783,896,944,817.02
  5. Step 5: Solve for x
    x = 1,783,896,944,817.02/1,215,008.10
  6. Step 6: Final answer
    x = 1,468,218.15

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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.