Home / 1,386,575.82-1,913,487.30-813,625.56

Finding the Fourth Proportional to 1,386,575.82, 1,913,487.30 and 813,625.56

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Solution

The fourth proportional to 1,386,575.82, 1,913,487.30 and 813,625.56 is: 1,122,810.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,575.82 : 1,913,487.30 = 813,625.56 : x
  2. Step 2: Convert to fraction form
    1,386,575.82/1,913,487.30 = 813,625.56/x
  3. Step 3: Cross multiply
    1,386,575.82x = 1,913,487.30 × 813,625.56
  4. Step 4: Simplify right side
    1,386,575.82x = 1,556,862,176,015.39
  5. Step 5: Solve for x
    x = 1,556,862,176,015.39/1,386,575.82
  6. Step 6: Final answer
    x = 1,122,810.71

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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.