Home / 1,491,212.80-2,057,897.10-812,148.76

Finding the Fourth Proportional to 1,491,212.80, 2,057,897.10 and 812,148.76

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Solution

The fourth proportional to 1,491,212.80, 2,057,897.10 and 812,148.76 is: 1,120,778.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491,212.80 : 2,057,897.10 = 812,148.76 : x
  2. Step 2: Convert to fraction form
    1,491,212.80/2,057,897.10 = 812,148.76/x
  3. Step 3: Cross multiply
    1,491,212.80x = 2,057,897.10 × 812,148.76
  4. Step 4: Simplify right side
    1,491,212.80x = 1,671,318,577,972.60
  5. Step 5: Solve for x
    x = 1,671,318,577,972.60/1,491,212.80
  6. Step 6: Final answer
    x = 1,120,778.05

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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.