Home / 1,380,512.82-1,905,186.11-829,397.10

Finding the Fourth Proportional to 1,380,512.82, 1,905,186.11 and 829,397.10

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Solution

The fourth proportional to 1,380,512.82, 1,905,186.11 and 829,397.10 is: 1,144,615.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,512.82 : 1,905,186.11 = 829,397.10 : x
  2. Step 2: Convert to fraction form
    1,380,512.82/1,905,186.11 = 829,397.10/x
  3. Step 3: Cross multiply
    1,380,512.82x = 1,905,186.11 × 829,397.10
  4. Step 4: Simplify right side
    1,380,512.82x = 1,580,155,830,447.30
  5. Step 5: Solve for x
    x = 1,580,155,830,447.30/1,380,512.82
  6. Step 6: Final answer
    x = 1,144,615.11

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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.