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Finding the Fourth Proportional to 1,123,599, 1,685,620.86 and 365,391.60

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Solution

The fourth proportional to 1,123,599, 1,685,620.86 and 365,391.60 is: 548,159.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,599 : 1,685,620.86 = 365,391.60 : x
  2. Step 2: Convert to fraction form
    1,123,599/1,685,620.86 = 365,391.60/x
  3. Step 3: Cross multiply
    1,123,599x = 1,685,620.86 × 365,391.60
  4. Step 4: Simplify right side
    1,123,599x = 615,911,703,028.78
  5. Step 5: Solve for x
    x = 615,911,703,028.78/1,123,599
  6. Step 6: Final answer
    x = 548,159.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.