Home / 779,908.20-1,168,112.70-639,940.20

Finding the Fourth Proportional to 779,908.20, 1,168,112.70 and 639,940.20

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Solution

The fourth proportional to 779,908.20, 1,168,112.70 and 639,940.20 is: 958,474.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,908.20 : 1,168,112.70 = 639,940.20 : x
  2. Step 2: Convert to fraction form
    779,908.20/1,168,112.70 = 639,940.20/x
  3. Step 3: Cross multiply
    779,908.20x = 1,168,112.70 × 639,940.20
  4. Step 4: Simplify right side
    779,908.20x = 747,522,274,860.54
  5. Step 5: Solve for x
    x = 747,522,274,860.54/779,908.20
  6. Step 6: Final answer
    x = 958,474.70

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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.