Home / 3,417,831.20-5,128,715.10-1,289,442.80

Finding the Fourth Proportional to 3,417,831.20, 5,128,715.10 and 1,289,442.80

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Solution

The fourth proportional to 3,417,831.20, 5,128,715.10 and 1,289,442.80 is: 1,934,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,417,831.20 : 5,128,715.10 = 1,289,442.80 : x
  2. Step 2: Convert to fraction form
    3,417,831.20/5,128,715.10 = 1,289,442.80/x
  3. Step 3: Cross multiply
    3,417,831.20x = 5,128,715.10 × 1,289,442.80
  4. Step 4: Simplify right side
    3,417,831.20x = 6,613,184,758,946.28
  5. Step 5: Solve for x
    x = 6,613,184,758,946.28/3,417,831.20
  6. Step 6: Final answer
    x = 1,934,906.78

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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.