Home / 1,391,439.66-2,088,506.31-672,287.23

Finding the Fourth Proportional to 1,391,439.66, 2,088,506.31 and 672,287.23

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Solution

The fourth proportional to 1,391,439.66, 2,088,506.31 and 672,287.23 is: 1,009,081.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,439.66 : 2,088,506.31 = 672,287.23 : x
  2. Step 2: Convert to fraction form
    1,391,439.66/2,088,506.31 = 672,287.23/x
  3. Step 3: Cross multiply
    1,391,439.66x = 2,088,506.31 × 672,287.23
  4. Step 4: Simplify right side
    1,391,439.66x = 1,404,076,121,987.42
  5. Step 5: Solve for x
    x = 1,404,076,121,987.42/1,391,439.66
  6. Step 6: Final answer
    x = 1,009,081.57

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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.