Home / 1,260,857.60-1,891,286.40-1,242,195.20

Finding the Fourth Proportional to 1,260,857.60, 1,891,286.40 and 1,242,195.20

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Solution

The fourth proportional to 1,260,857.60, 1,891,286.40 and 1,242,195.20 is: 1,863,292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,857.60 : 1,891,286.40 = 1,242,195.20 : x
  2. Step 2: Convert to fraction form
    1,260,857.60/1,891,286.40 = 1,242,195.20/x
  3. Step 3: Cross multiply
    1,260,857.60x = 1,891,286.40 × 1,242,195.20
  4. Step 4: Simplify right side
    1,260,857.60x = 2,349,346,887,905.28
  5. Step 5: Solve for x
    x = 2,349,346,887,905.28/1,260,857.60
  6. Step 6: Final answer
    x = 1,863,292.80

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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.