Home / 761,642.85-1,051,067.12-422,132.97

Finding the Fourth Proportional to 761,642.85, 1,051,067.12 and 422,132.97

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Solution

The fourth proportional to 761,642.85, 1,051,067.12 and 422,132.97 is: 582,543.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,642.85 : 1,051,067.12 = 422,132.97 : x
  2. Step 2: Convert to fraction form
    761,642.85/1,051,067.12 = 422,132.97/x
  3. Step 3: Cross multiply
    761,642.85x = 1,051,067.12 × 422,132.97
  4. Step 4: Simplify right side
    761,642.85x = 443,690,082,924.28
  5. Step 5: Solve for x
    x = 443,690,082,924.28/761,642.85
  6. Step 6: Final answer
    x = 582,543.49

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Half scale
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Double scale
Find fourth proportional to 761,643.85, 1,051,068.49 and 422,133.97
Similar ratio
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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.