Home / 627,831.22-866,436.70-355,904.39

Finding the Fourth Proportional to 627,831.22, 866,436.70 and 355,904.39

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Solution

The fourth proportional to 627,831.22, 866,436.70 and 355,904.39 is: 491,164.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,831.22 : 866,436.70 = 355,904.39 : x
  2. Step 2: Convert to fraction form
    627,831.22/866,436.70 = 355,904.39/x
  3. Step 3: Cross multiply
    627,831.22x = 866,436.70 × 355,904.39
  4. Step 4: Simplify right side
    627,831.22x = 308,368,625,187.11
  5. Step 5: Solve for x
    x = 308,368,625,187.11/627,831.22
  6. Step 6: Final answer
    x = 491,164.85

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1.5x scale

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.