Home / 1,272,209.70-1,908,314.55-1,098,999.30

Finding the Fourth Proportional to 1,272,209.70, 1,908,314.55 and 1,098,999.30

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Solution

The fourth proportional to 1,272,209.70, 1,908,314.55 and 1,098,999.30 is: 1,648,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,209.70 : 1,908,314.55 = 1,098,999.30 : x
  2. Step 2: Convert to fraction form
    1,272,209.70/1,908,314.55 = 1,098,999.30/x
  3. Step 3: Cross multiply
    1,272,209.70x = 1,908,314.55 × 1,098,999.30
  4. Step 4: Simplify right side
    1,272,209.70x = 2,097,236,354,629.82
  5. Step 5: Solve for x
    x = 2,097,236,354,629.82/1,272,209.70
  6. Step 6: Final answer
    x = 1,648,498.95

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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.