Home / 1,278,429.24-1,915,281.90-645,832.20

Finding the Fourth Proportional to 1,278,429.24, 1,915,281.90 and 645,832.20

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Solution

The fourth proportional to 1,278,429.24, 1,915,281.90 and 645,832.20 is: 967,555.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,429.24 : 1,915,281.90 = 645,832.20 : x
  2. Step 2: Convert to fraction form
    1,278,429.24/1,915,281.90 = 645,832.20/x
  3. Step 3: Cross multiply
    1,278,429.24x = 1,915,281.90 × 645,832.20
  4. Step 4: Simplify right side
    1,278,429.24x = 1,236,950,723,097.18
  5. Step 5: Solve for x
    x = 1,236,950,723,097.18/1,278,429.24
  6. Step 6: Final answer
    x = 967,555.09

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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.