Home / 498,727.82-688,245.18-283,867.90

Finding the Fourth Proportional to 498,727.82, 688,245.18 and 283,867.90

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Solution

The fourth proportional to 498,727.82, 688,245.18 and 283,867.90 is: 391,738.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,727.82 : 688,245.18 = 283,867.90 : x
  2. Step 2: Convert to fraction form
    498,727.82/688,245.18 = 283,867.90/x
  3. Step 3: Cross multiply
    498,727.82x = 688,245.18 × 283,867.90
  4. Step 4: Simplify right side
    498,727.82x = 195,370,709,071.16
  5. Step 5: Solve for x
    x = 195,370,709,071.16/498,727.82
  6. Step 6: Final answer
    x = 391,738.14

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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.