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Finding the Fourth Proportional to 1,433,351.12, 1,977,974.96 and 788,711.04

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Solution

The fourth proportional to 1,433,351.12, 1,977,974.96 and 788,711.04 is: 1,088,393.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,351.12 : 1,977,974.96 = 788,711.04 : x
  2. Step 2: Convert to fraction form
    1,433,351.12/1,977,974.96 = 788,711.04/x
  3. Step 3: Cross multiply
    1,433,351.12x = 1,977,974.96 × 788,711.04
  4. Step 4: Simplify right side
    1,433,351.12x = 1,560,050,687,795.56
  5. Step 5: Solve for x
    x = 1,560,050,687,795.56/1,433,351.12
  6. Step 6: Final answer
    x = 1,088,393.95

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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.