Home / 715,857.78-1,074,564.68-289,686.92

Finding the Fourth Proportional to 715,857.78, 1,074,564.68 and 289,686.92

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Solution

The fourth proportional to 715,857.78, 1,074,564.68 and 289,686.92 is: 434,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,857.78 : 1,074,564.68 = 289,686.92 : x
  2. Step 2: Convert to fraction form
    715,857.78/1,074,564.68 = 289,686.92/x
  3. Step 3: Cross multiply
    715,857.78x = 1,074,564.68 × 289,686.92
  4. Step 4: Simplify right side
    715,857.78x = 311,287,332,489.99
  5. Step 5: Solve for x
    x = 311,287,332,489.99/715,857.78
  6. Step 6: Final answer
    x = 434,845.22

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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.