Home / 3,120,505.70-4,680,758.55-876,643.70

Finding the Fourth Proportional to 3,120,505.70, 4,680,758.55 and 876,643.70

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Solution

The fourth proportional to 3,120,505.70, 4,680,758.55 and 876,643.70 is: 1,314,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,505.70 : 4,680,758.55 = 876,643.70 : x
  2. Step 2: Convert to fraction form
    3,120,505.70/4,680,758.55 = 876,643.70/x
  3. Step 3: Cross multiply
    3,120,505.70x = 4,680,758.55 × 876,643.70
  4. Step 4: Simplify right side
    3,120,505.70x = 4,103,357,494,078.64
  5. Step 5: Solve for x
    x = 4,103,357,494,078.64/3,120,505.70
  6. Step 6: Final answer
    x = 1,314,965.55

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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.