Home / 1,310,143.88-1,808,708.20-918,878.42

Finding the Fourth Proportional to 1,310,143.88, 1,808,708.20 and 918,878.42

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Solution

The fourth proportional to 1,310,143.88, 1,808,708.20 and 918,878.42 is: 1,268,549.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,143.88 : 1,808,708.20 = 918,878.42 : x
  2. Step 2: Convert to fraction form
    1,310,143.88/1,808,708.20 = 918,878.42/x
  3. Step 3: Cross multiply
    1,310,143.88x = 1,808,708.20 × 918,878.42
  4. Step 4: Simplify right side
    1,310,143.88x = 1,661,982,933,057.04
  5. Step 5: Solve for x
    x = 1,661,982,933,057.04/1,310,143.88
  6. Step 6: Final answer
    x = 1,268,549.93

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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.