Home / 1,092,170.10-1,638,255.15-978,008.70

Finding the Fourth Proportional to 1,092,170.10, 1,638,255.15 and 978,008.70

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Solution

The fourth proportional to 1,092,170.10, 1,638,255.15 and 978,008.70 is: 1,467,013.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,170.10 : 1,638,255.15 = 978,008.70 : x
  2. Step 2: Convert to fraction form
    1,092,170.10/1,638,255.15 = 978,008.70/x
  3. Step 3: Cross multiply
    1,092,170.10x = 1,638,255.15 × 978,008.70
  4. Step 4: Simplify right side
    1,092,170.10x = 1,602,227,789,519.81
  5. Step 5: Solve for x
    x = 1,602,227,789,519.81/1,092,170.10
  6. Step 6: Final answer
    x = 1,467,013.05

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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.