Home / 672,939.24-928,131.09-431,244.30

Finding the Fourth Proportional to 672,939.24, 928,131.09 and 431,244.30

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Solution

The fourth proportional to 672,939.24, 928,131.09 and 431,244.30 is: 594,780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,939.24 : 928,131.09 = 431,244.30 : x
  2. Step 2: Convert to fraction form
    672,939.24/928,131.09 = 431,244.30/x
  3. Step 3: Cross multiply
    672,939.24x = 928,131.09 × 431,244.30
  4. Step 4: Simplify right side
    672,939.24x = 400,251,242,215.29
  5. Step 5: Solve for x
    x = 400,251,242,215.29/672,939.24
  6. Step 6: Final answer
    x = 594,780.66

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Double scale
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1.5x scale

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.