Home / 678,952.13-1,016,878.15-324,215.26

Finding the Fourth Proportional to 678,952.13, 1,016,878.15 and 324,215.26

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Solution

The fourth proportional to 678,952.13, 1,016,878.15 and 324,215.26 is: 485,582.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,952.13 : 1,016,878.15 = 324,215.26 : x
  2. Step 2: Convert to fraction form
    678,952.13/1,016,878.15 = 324,215.26/x
  3. Step 3: Cross multiply
    678,952.13x = 1,016,878.15 × 324,215.26
  4. Step 4: Simplify right side
    678,952.13x = 329,687,411,653.64
  5. Step 5: Solve for x
    x = 329,687,411,653.64/678,952.13
  6. Step 6: Final answer
    x = 485,582.71

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Double scale
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Similar ratio
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1.5x scale

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.