Home / 1,386,087.96-1,912,817.34-813,137.88

Finding the Fourth Proportional to 1,386,087.96, 1,912,817.34 and 813,137.88

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Solution

The fourth proportional to 1,386,087.96, 1,912,817.34 and 813,137.88 is: 1,122,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,087.96 : 1,912,817.34 = 813,137.88 : x
  2. Step 2: Convert to fraction form
    1,386,087.96/1,912,817.34 = 813,137.88/x
  3. Step 3: Cross multiply
    1,386,087.96x = 1,912,817.34 × 813,137.88
  4. Step 4: Simplify right side
    1,386,087.96x = 1,555,384,236,674.84
  5. Step 5: Solve for x
    x = 1,555,384,236,674.84/1,386,087.96
  6. Step 6: Final answer
    x = 1,122,139.63

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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.