Home / 627,133.60-865,112.64-397,285.44

Finding the Fourth Proportional to 627,133.60, 865,112.64 and 397,285.44

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Solution

The fourth proportional to 627,133.60, 865,112.64 and 397,285.44 is: 548,043.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,133.60 : 865,112.64 = 397,285.44 : x
  2. Step 2: Convert to fraction form
    627,133.60/865,112.64 = 397,285.44/x
  3. Step 3: Cross multiply
    627,133.60x = 865,112.64 × 397,285.44
  4. Step 4: Simplify right side
    627,133.60x = 343,696,655,831.96
  5. Step 5: Solve for x
    x = 343,696,655,831.96/627,133.60
  6. Step 6: Final answer
    x = 548,043.76

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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.