Home / 1,438,629.70-2,154,834.15-1,281,036.10

Finding the Fourth Proportional to 1,438,629.70, 2,154,834.15 and 1,281,036.10

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Solution

The fourth proportional to 1,438,629.70, 2,154,834.15 and 1,281,036.10 is: 1,918,784.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,629.70 : 2,154,834.15 = 1,281,036.10 : x
  2. Step 2: Convert to fraction form
    1,438,629.70/2,154,834.15 = 1,281,036.10/x
  3. Step 3: Cross multiply
    1,438,629.70x = 2,154,834.15 × 1,281,036.10
  4. Step 4: Simplify right side
    1,438,629.70x = 2,760,420,335,662.82
  5. Step 5: Solve for x
    x = 2,760,420,335,662.82/1,438,629.70
  6. Step 6: Final answer
    x = 1,918,784.48

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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.