Home / 691,982.72-1,037,884.80-218,715.92

Finding the Fourth Proportional to 691,982.72, 1,037,884.80 and 218,715.92

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Solution

The fourth proportional to 691,982.72, 1,037,884.80 and 218,715.92 is: 328,045.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,982.72 : 1,037,884.80 = 218,715.92 : x
  2. Step 2: Convert to fraction form
    691,982.72/1,037,884.80 = 218,715.92/x
  3. Step 3: Cross multiply
    691,982.72x = 1,037,884.80 × 218,715.92
  4. Step 4: Simplify right side
    691,982.72x = 227,001,928,886.02
  5. Step 5: Solve for x
    x = 227,001,928,886.02/691,982.72
  6. Step 6: Final answer
    x = 328,045.66

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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.