Home / 1,386,136.96-1,912,884.96-813,186.88

Finding the Fourth Proportional to 1,386,136.96, 1,912,884.96 and 813,186.88

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Solution

The fourth proportional to 1,386,136.96, 1,912,884.96 and 813,186.88 is: 1,122,207.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,136.96 : 1,912,884.96 = 813,186.88 : x
  2. Step 2: Convert to fraction form
    1,386,136.96/1,912,884.96 = 813,186.88/x
  3. Step 3: Cross multiply
    1,386,136.96x = 1,912,884.96 × 813,186.88
  4. Step 4: Simplify right side
    1,386,136.96x = 1,555,532,952,421.32
  5. Step 5: Solve for x
    x = 1,555,532,952,421.32/1,386,136.96
  6. Step 6: Final answer
    x = 1,122,207.25

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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.