Home / 643,276.96-887,722.70-356,799.10

Finding the Fourth Proportional to 643,276.96, 887,722.70 and 356,799.10

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Solution

The fourth proportional to 643,276.96, 887,722.70 and 356,799.10 is: 492,383.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,276.96 : 887,722.70 = 356,799.10 : x
  2. Step 2: Convert to fraction form
    643,276.96/887,722.70 = 356,799.10/x
  3. Step 3: Cross multiply
    643,276.96x = 887,722.70 × 356,799.10
  4. Step 4: Simplify right side
    643,276.96x = 316,738,660,409.57
  5. Step 5: Solve for x
    x = 316,738,660,409.57/643,276.96
  6. Step 6: Final answer
    x = 492,383.03

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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.