Home / 521,989.12-720,320.88-295,636.24

Finding the Fourth Proportional to 521,989.12, 720,320.88 and 295,636.24

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Solution

The fourth proportional to 521,989.12, 720,320.88 and 295,636.24 is: 407,964.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,989.12 : 720,320.88 = 295,636.24 : x
  2. Step 2: Convert to fraction form
    521,989.12/720,320.88 = 295,636.24/x
  3. Step 3: Cross multiply
    521,989.12x = 720,320.88 × 295,636.24
  4. Step 4: Simplify right side
    521,989.12x = 212,952,956,556.69
  5. Step 5: Solve for x
    x = 212,952,956,556.69/521,989.12
  6. Step 6: Final answer
    x = 407,964.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.