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Finding the Fourth Proportional to 788,990, 1,181,921.16 and 367,686.32

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Solution

The fourth proportional to 788,990, 1,181,921.16 and 367,686.32 is: 550,800.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,990 : 1,181,921.16 = 367,686.32 : x
  2. Step 2: Convert to fraction form
    788,990/1,181,921.16 = 367,686.32/x
  3. Step 3: Cross multiply
    788,990x = 1,181,921.16 × 367,686.32
  4. Step 4: Simplify right side
    788,990x = 434,576,241,850.53
  5. Step 5: Solve for x
    x = 434,576,241,850.53/788,990
  6. Step 6: Final answer
    x = 550,800.70

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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.