Home / 643,157.15-887,611.43-356,769.50

Finding the Fourth Proportional to 643,157.15, 887,611.43 and 356,769.50

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Solution

The fourth proportional to 643,157.15, 887,611.43 and 356,769.50 is: 492,372.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,157.15 : 887,611.43 = 356,769.50 : x
  2. Step 2: Convert to fraction form
    643,157.15/887,611.43 = 356,769.50/x
  3. Step 3: Cross multiply
    643,157.15x = 887,611.43 × 356,769.50
  4. Step 4: Simplify right side
    643,157.15x = 316,672,684,291.54
  5. Step 5: Solve for x
    x = 316,672,684,291.54/643,157.15
  6. Step 6: Final answer
    x = 492,372.17

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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.