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Finding the Fourth Proportional to 660,061.09, 910,882.02 and 358,255.09

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Solution

The fourth proportional to 660,061.09, 910,882.02 and 358,255.09 is: 494,390.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,061.09 : 910,882.02 = 358,255.09 : x
  2. Step 2: Convert to fraction form
    660,061.09/910,882.02 = 358,255.09/x
  3. Step 3: Cross multiply
    660,061.09x = 910,882.02 × 358,255.09
  4. Step 4: Simplify right side
    660,061.09x = 326,328,120,054.48
  5. Step 5: Solve for x
    x = 326,328,120,054.48/660,061.09
  6. Step 6: Final answer
    x = 494,390.78

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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.