Home / 789,981.54-1,185,095.16-257,378.46

Finding the Fourth Proportional to 789,981.54, 1,185,095.16 and 257,378.46

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Solution

The fourth proportional to 789,981.54, 1,185,095.16 and 257,378.46 is: 386,107.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,981.54 : 1,185,095.16 = 257,378.46 : x
  2. Step 2: Convert to fraction form
    789,981.54/1,185,095.16 = 257,378.46/x
  3. Step 3: Cross multiply
    789,981.54x = 1,185,095.16 × 257,378.46
  4. Step 4: Simplify right side
    789,981.54x = 305,017,967,234.25
  5. Step 5: Solve for x
    x = 305,017,967,234.25/789,981.54
  6. Step 6: Final answer
    x = 386,107.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.