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Finding the Fourth Proportional to 662,131.74, 913,682.22 and 386,513.51

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Solution

The fourth proportional to 662,131.74, 913,682.22 and 386,513.51 is: 533,353.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,131.74 : 913,682.22 = 386,513.51 : x
  2. Step 2: Convert to fraction form
    662,131.74/913,682.22 = 386,513.51/x
  3. Step 3: Cross multiply
    662,131.74x = 913,682.22 × 386,513.51
  4. Step 4: Simplify right side
    662,131.74x = 353,150,524,655.22
  5. Step 5: Solve for x
    x = 353,150,524,655.22/662,131.74
  6. Step 6: Final answer
    x = 533,353.87

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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.