Home / 641,831.34-885,740.77-351,455.15

Finding the Fourth Proportional to 641,831.34, 885,740.77 and 351,455.15

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Solution

The fourth proportional to 641,831.34, 885,740.77 and 351,455.15 is: 485,015.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,831.34 : 885,740.77 = 351,455.15 : x
  2. Step 2: Convert to fraction form
    641,831.34/885,740.77 = 351,455.15/x
  3. Step 3: Cross multiply
    641,831.34x = 885,740.77 × 351,455.15
  4. Step 4: Simplify right side
    641,831.34x = 311,298,157,835.14
  5. Step 5: Solve for x
    x = 311,298,157,835.14/641,831.34
  6. Step 6: Final answer
    x = 485,015.51

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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.