Home / 789,981.56-1,185,095.16-257,378.48

Finding the Fourth Proportional to 789,981.56, 1,185,095.16 and 257,378.48

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Solution

The fourth proportional to 789,981.56, 1,185,095.16 and 257,378.48 is: 386,107.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,981.56 : 1,185,095.16 = 257,378.48 : x
  2. Step 2: Convert to fraction form
    789,981.56/1,185,095.16 = 257,378.48/x
  3. Step 3: Cross multiply
    789,981.56x = 1,185,095.16 × 257,378.48
  4. Step 4: Simplify right side
    789,981.56x = 305,017,990,936.16
  5. Step 5: Solve for x
    x = 305,017,990,936.16/789,981.56
  6. Step 6: Final answer
    x = 386,107.74

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Double scale
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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.