Home / 1,212,336.20-1,818,504.30-988,387.40

Finding the Fourth Proportional to 1,212,336.20, 1,818,504.30 and 988,387.40

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Solution

The fourth proportional to 1,212,336.20, 1,818,504.30 and 988,387.40 is: 1,482,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,336.20 : 1,818,504.30 = 988,387.40 : x
  2. Step 2: Convert to fraction form
    1,212,336.20/1,818,504.30 = 988,387.40/x
  3. Step 3: Cross multiply
    1,212,336.20x = 1,818,504.30 × 988,387.40
  4. Step 4: Simplify right side
    1,212,336.20x = 1,797,386,736,965.82
  5. Step 5: Solve for x
    x = 1,797,386,736,965.82/1,212,336.20
  6. Step 6: Final answer
    x = 1,482,581.10

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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.