Home / 865,667.22-1,298,640.37-266,628.11

Finding the Fourth Proportional to 865,667.22, 1,298,640.37 and 266,628.11

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Solution

The fourth proportional to 865,667.22, 1,298,640.37 and 266,628.11 is: 399,985.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,667.22 : 1,298,640.37 = 266,628.11 : x
  2. Step 2: Convert to fraction form
    865,667.22/1,298,640.37 = 266,628.11/x
  3. Step 3: Cross multiply
    865,667.22x = 1,298,640.37 × 266,628.11
  4. Step 4: Simplify right side
    865,667.22x = 346,254,021,512.85
  5. Step 5: Solve for x
    x = 346,254,021,512.85/865,667.22
  6. Step 6: Final answer
    x = 399,985.13

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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.