Home / 1,212,235.20-1,818,352.80-988,286.40

Finding the Fourth Proportional to 1,212,235.20, 1,818,352.80 and 988,286.40

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Solution

The fourth proportional to 1,212,235.20, 1,818,352.80 and 988,286.40 is: 1,482,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,235.20 : 1,818,352.80 = 988,286.40 : x
  2. Step 2: Convert to fraction form
    1,212,235.20/1,818,352.80 = 988,286.40/x
  3. Step 3: Cross multiply
    1,212,235.20x = 1,818,352.80 × 988,286.40
  4. Step 4: Simplify right side
    1,212,235.20x = 1,797,053,342,641.92
  5. Step 5: Solve for x
    x = 1,797,053,342,641.92/1,212,235.20
  6. Step 6: Final answer
    x = 1,482,429.60

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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.