Home / 509,904.10-764,831.85-172,911.70

Finding the Fourth Proportional to 509,904.10, 764,831.85 and 172,911.70

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Solution

The fourth proportional to 509,904.10, 764,831.85 and 172,911.70 is: 259,359.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,904.10 : 764,831.85 = 172,911.70 : x
  2. Step 2: Convert to fraction form
    509,904.10/764,831.85 = 172,911.70/x
  3. Step 3: Cross multiply
    509,904.10x = 764,831.85 × 172,911.70
  4. Step 4: Simplify right side
    509,904.10x = 132,248,375,397.65
  5. Step 5: Solve for x
    x = 132,248,375,397.65/509,904.10
  6. Step 6: Final answer
    x = 259,359.31

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1.5x scale

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.