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Finding the Fourth Proportional to 637,202, 879,338.76 and 368,930

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Solution

The fourth proportional to 637,202, 879,338.76 and 368,930 is: 509,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,202 : 879,338.76 = 368,930 : x
  2. Step 2: Convert to fraction form
    637,202/879,338.76 = 368,930/x
  3. Step 3: Cross multiply
    637,202x = 879,338.76 × 368,930
  4. Step 4: Simplify right side
    637,202x = 324,414,448,726.80
  5. Step 5: Solve for x
    x = 324,414,448,726.80/637,202
  6. Step 6: Final answer
    x = 509,123.40

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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.