Home / 539,009.71-743,831.91-309,581.87

Finding the Fourth Proportional to 539,009.71, 743,831.91 and 309,581.87

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Solution

The fourth proportional to 539,009.71, 743,831.91 and 309,581.87 is: 427,222.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,009.71 : 743,831.91 = 309,581.87 : x
  2. Step 2: Convert to fraction form
    539,009.71/743,831.91 = 309,581.87/x
  3. Step 3: Cross multiply
    539,009.71x = 743,831.91 × 309,581.87
  4. Step 4: Simplify right side
    539,009.71x = 230,276,869,944.31
  5. Step 5: Solve for x
    x = 230,276,869,944.31/539,009.71
  6. Step 6: Final answer
    x = 427,222.12

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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.