Home / 516,419.55-712,640.03-286,991.10

Finding the Fourth Proportional to 516,419.55, 712,640.03 and 286,991.10

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Solution

The fourth proportional to 516,419.55, 712,640.03 and 286,991.10 is: 396,037.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,419.55 : 712,640.03 = 286,991.10 : x
  2. Step 2: Convert to fraction form
    516,419.55/712,640.03 = 286,991.10/x
  3. Step 3: Cross multiply
    516,419.55x = 712,640.03 × 286,991.10
  4. Step 4: Simplify right side
    516,419.55x = 204,521,344,678.78
  5. Step 5: Solve for x
    x = 204,521,344,678.78/516,419.55
  6. Step 6: Final answer
    x = 396,037.18

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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.