Home / 643,316.02-887,882.58-356,928.37

Finding the Fourth Proportional to 643,316.02, 887,882.58 and 356,928.37

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Solution

The fourth proportional to 643,316.02, 887,882.58 and 356,928.37 is: 492,620.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,316.02 : 887,882.58 = 356,928.37 : x
  2. Step 2: Convert to fraction form
    643,316.02/887,882.58 = 356,928.37/x
  3. Step 3: Cross multiply
    643,316.02x = 887,882.58 × 356,928.37
  4. Step 4: Simplify right side
    643,316.02x = 316,910,479,811.09
  5. Step 5: Solve for x
    x = 316,910,479,811.09/643,316.02
  6. Step 6: Final answer
    x = 492,620.22

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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.