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Finding the Fourth Proportional to 1,807,704.46, 2,494,631.19 and 991,913.50

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Solution

The fourth proportional to 1,807,704.46, 2,494,631.19 and 991,913.50 is: 1,368,840.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807,704.46 : 2,494,631.19 = 991,913.50 : x
  2. Step 2: Convert to fraction form
    1,807,704.46/2,494,631.19 = 991,913.50/x
  3. Step 3: Cross multiply
    1,807,704.46x = 2,494,631.19 × 991,913.50
  4. Step 4: Simplify right side
    1,807,704.46x = 2,474,458,354,882.07
  5. Step 5: Solve for x
    x = 2,474,458,354,882.07/1,807,704.46
  6. Step 6: Final answer
    x = 1,368,840.10

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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.