Home / 1,386,350.88-1,912,948.50-782,725.92

Finding the Fourth Proportional to 1,386,350.88, 1,912,948.50 and 782,725.92

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Solution

The fourth proportional to 1,386,350.88, 1,912,948.50 and 782,725.92 is: 1,080,039.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,350.88 : 1,912,948.50 = 782,725.92 : x
  2. Step 2: Convert to fraction form
    1,386,350.88/1,912,948.50 = 782,725.92/x
  3. Step 3: Cross multiply
    1,386,350.88x = 1,912,948.50 × 782,725.92
  4. Step 4: Simplify right side
    1,386,350.88x = 1,497,314,374,575.12
  5. Step 5: Solve for x
    x = 1,497,314,374,575.12/1,386,350.88
  6. Step 6: Final answer
    x = 1,080,039.98

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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.