Home / 1,991,320-2,748,228.96-1,227,353.92

Finding the Fourth Proportional to 1,991,320, 2,748,228.96 and 1,227,353.92

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Solution

The fourth proportional to 1,991,320, 2,748,228.96 and 1,227,353.92 is: 1,693,876.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,320 : 2,748,228.96 = 1,227,353.92 : x
  2. Step 2: Convert to fraction form
    1,991,320/2,748,228.96 = 1,227,353.92/x
  3. Step 3: Cross multiply
    1,991,320x = 2,748,228.96 × 1,227,353.92
  4. Step 4: Simplify right side
    1,991,320x = 3,373,049,587,113.52
  5. Step 5: Solve for x
    x = 3,373,049,587,113.52/1,991,320
  6. Step 6: Final answer
    x = 1,693,876.22

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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.