Home / 691,720.83-1,037,781.78-286,837.86

Finding the Fourth Proportional to 691,720.83, 1,037,781.78 and 286,837.86

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Solution

The fourth proportional to 691,720.83, 1,037,781.78 and 286,837.86 is: 430,339.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,720.83 : 1,037,781.78 = 286,837.86 : x
  2. Step 2: Convert to fraction form
    691,720.83/1,037,781.78 = 286,837.86/x
  3. Step 3: Cross multiply
    691,720.83x = 1,037,781.78 × 286,837.86
  4. Step 4: Simplify right side
    691,720.83x = 297,675,104,922.19
  5. Step 5: Solve for x
    x = 297,675,104,922.19/691,720.83
  6. Step 6: Final answer
    x = 430,339.95

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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.