Home / 1,272,947.80-1,909,421.70-1,131,230.20

Finding the Fourth Proportional to 1,272,947.80, 1,909,421.70 and 1,131,230.20

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Solution

The fourth proportional to 1,272,947.80, 1,909,421.70 and 1,131,230.20 is: 1,696,845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,947.80 : 1,909,421.70 = 1,131,230.20 : x
  2. Step 2: Convert to fraction form
    1,272,947.80/1,909,421.70 = 1,131,230.20/x
  3. Step 3: Cross multiply
    1,272,947.80x = 1,909,421.70 × 1,131,230.20
  4. Step 4: Simplify right side
    1,272,947.80x = 2,159,995,491,575.34
  5. Step 5: Solve for x
    x = 2,159,995,491,575.34/1,272,947.80
  6. Step 6: Final answer
    x = 1,696,845.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.