Home / 664,720.10-996,871.01-215,336.70

Finding the Fourth Proportional to 664,720.10, 996,871.01 and 215,336.70

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Solution

The fourth proportional to 664,720.10, 996,871.01 and 215,336.70 is: 322,937.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,720.10 : 996,871.01 = 215,336.70 : x
  2. Step 2: Convert to fraction form
    664,720.10/996,871.01 = 215,336.70/x
  3. Step 3: Cross multiply
    664,720.10x = 996,871.01 × 215,336.70
  4. Step 4: Simplify right side
    664,720.10x = 214,662,913,619.07
  5. Step 5: Solve for x
    x = 214,662,913,619.07/664,720.10
  6. Step 6: Final answer
    x = 322,937.30

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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.