Home / 691,987.60-1,037,884.20-218,720.80

Finding the Fourth Proportional to 691,987.60, 1,037,884.20 and 218,720.80

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Solution

The fourth proportional to 691,987.60, 1,037,884.20 and 218,720.80 is: 328,050.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,987.60 : 1,037,884.20 = 218,720.80 : x
  2. Step 2: Convert to fraction form
    691,987.60/1,037,884.20 = 218,720.80/x
  3. Step 3: Cross multiply
    691,987.60x = 1,037,884.20 × 218,720.80
  4. Step 4: Simplify right side
    691,987.60x = 227,006,862,531.36
  5. Step 5: Solve for x
    x = 227,006,862,531.36/691,987.60
  6. Step 6: Final answer
    x = 328,050.48

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1.5x scale

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.