Home / 538,831.71-743,637.69-309,419.10

Finding the Fourth Proportional to 538,831.71, 743,637.69 and 309,419.10

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Solution

The fourth proportional to 538,831.71, 743,637.69 and 309,419.10 is: 427,027.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,831.71 : 743,637.69 = 309,419.10 : x
  2. Step 2: Convert to fraction form
    538,831.71/743,637.69 = 309,419.10/x
  3. Step 3: Cross multiply
    538,831.71x = 743,637.69 × 309,419.10
  4. Step 4: Simplify right side
    538,831.71x = 230,095,704,765.88
  5. Step 5: Solve for x
    x = 230,095,704,765.88/538,831.71
  6. Step 6: Final answer
    x = 427,027.03

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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.