Home / 713,664.38-984,766.32-391,289.64

Finding the Fourth Proportional to 713,664.38, 984,766.32 and 391,289.64

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Solution

The fourth proportional to 713,664.38, 984,766.32 and 391,289.64 is: 539,930.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,664.38 : 984,766.32 = 391,289.64 : x
  2. Step 2: Convert to fraction form
    713,664.38/984,766.32 = 391,289.64/x
  3. Step 3: Cross multiply
    713,664.38x = 984,766.32 × 391,289.64
  4. Step 4: Simplify right side
    713,664.38x = 385,328,858,836.93
  5. Step 5: Solve for x
    x = 385,328,858,836.93/713,664.38
  6. Step 6: Final answer
    x = 539,930.07

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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.