Home / 661,837.19-913,031.97-389,774.84

Finding the Fourth Proportional to 661,837.19, 913,031.97 and 389,774.84

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Solution

The fourth proportional to 661,837.19, 913,031.97 and 389,774.84 is: 537,710.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,837.19 : 913,031.97 = 389,774.84 : x
  2. Step 2: Convert to fraction form
    661,837.19/913,031.97 = 389,774.84/x
  3. Step 3: Cross multiply
    661,837.19x = 913,031.97 × 389,774.84
  4. Step 4: Simplify right side
    661,837.19x = 355,876,890,842.56
  5. Step 5: Solve for x
    x = 355,876,890,842.56/661,837.19
  6. Step 6: Final answer
    x = 537,710.63

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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.