Home / 1,129,787-1,694,678.94-288,338.72

Finding the Fourth Proportional to 1,129,787, 1,694,678.94 and 288,338.72

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Solution

The fourth proportional to 1,129,787, 1,694,678.94 and 288,338.72 is: 432,507.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,787 : 1,694,678.94 = 288,338.72 : x
  2. Step 2: Convert to fraction form
    1,129,787/1,694,678.94 = 288,338.72/x
  3. Step 3: Cross multiply
    1,129,787x = 1,694,678.94 × 288,338.72
  4. Step 4: Simplify right side
    1,129,787x = 488,641,556,370.56
  5. Step 5: Solve for x
    x = 488,641,556,370.56/1,129,787
  6. Step 6: Final answer
    x = 432,507.68

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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.