Home / 1,428,577.85-1,970,876.25-816,402.20

Finding the Fourth Proportional to 1,428,577.85, 1,970,876.25 and 816,402.20

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Solution

The fourth proportional to 1,428,577.85, 1,970,876.25 and 816,402.20 is: 1,126,314.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,577.85 : 1,970,876.25 = 816,402.20 : x
  2. Step 2: Convert to fraction form
    1,428,577.85/1,970,876.25 = 816,402.20/x
  3. Step 3: Cross multiply
    1,428,577.85x = 1,970,876.25 × 816,402.20
  4. Step 4: Simplify right side
    1,428,577.85x = 1,609,027,706,427.75
  5. Step 5: Solve for x
    x = 1,609,027,706,427.75/1,428,577.85
  6. Step 6: Final answer
    x = 1,126,314.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.