Home / 1,191,340.55-1,644,065.75-647,487.11

Finding the Fourth Proportional to 1,191,340.55, 1,644,065.75 and 647,487.11

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Solution

The fourth proportional to 1,191,340.55, 1,644,065.75 and 647,487.11 is: 893,540.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,340.55 : 1,644,065.75 = 647,487.11 : x
  2. Step 2: Convert to fraction form
    1,191,340.55/1,644,065.75 = 647,487.11/x
  3. Step 3: Cross multiply
    1,191,340.55x = 1,644,065.75 × 647,487.11
  4. Step 4: Simplify right side
    1,191,340.55x = 1,064,511,374,515.87
  5. Step 5: Solve for x
    x = 1,064,511,374,515.87/1,191,340.55
  6. Step 6: Final answer
    x = 893,540.79

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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.