Home / 643,489.75-965,502.33-283,476.34

Finding the Fourth Proportional to 643,489.75, 965,502.33 and 283,476.34

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Solution

The fourth proportional to 643,489.75, 965,502.33 and 283,476.34 is: 425,332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,489.75 : 965,502.33 = 283,476.34 : x
  2. Step 2: Convert to fraction form
    643,489.75/965,502.33 = 283,476.34/x
  3. Step 3: Cross multiply
    643,489.75x = 965,502.33 × 283,476.34
  4. Step 4: Simplify right side
    643,489.75x = 273,697,066,769.87
  5. Step 5: Solve for x
    x = 273,697,066,769.87/643,489.75
  6. Step 6: Final answer
    x = 425,332.44

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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.