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Finding the Fourth Proportional to 658,663.36, 908,959.22 and 356,857.36

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Solution

The fourth proportional to 658,663.36, 908,959.22 and 356,857.36 is: 492,465.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,663.36 : 908,959.22 = 356,857.36 : x
  2. Step 2: Convert to fraction form
    658,663.36/908,959.22 = 356,857.36/x
  3. Step 3: Cross multiply
    658,663.36x = 908,959.22 × 356,857.36
  4. Step 4: Simplify right side
    658,663.36x = 324,368,787,596.86
  5. Step 5: Solve for x
    x = 324,368,787,596.86/658,663.36
  6. Step 6: Final answer
    x = 492,465.21

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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.