Home / 1,991,502.40-2,748,520.20-1,216,973.92

Finding the Fourth Proportional to 1,991,502.40, 2,748,520.20 and 1,216,973.92

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Solution

The fourth proportional to 1,991,502.40, 2,748,520.20 and 1,216,973.92 is: 1,679,574.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,502.40 : 2,748,520.20 = 1,216,973.92 : x
  2. Step 2: Convert to fraction form
    1,991,502.40/2,748,520.20 = 1,216,973.92/x
  3. Step 3: Cross multiply
    1,991,502.40x = 2,748,520.20 × 1,216,973.92
  4. Step 4: Simplify right side
    1,991,502.40x = 3,344,877,401,993.18
  5. Step 5: Solve for x
    x = 3,344,877,401,993.18/1,991,502.40
  6. Step 6: Final answer
    x = 1,679,574.88

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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.