Home / 779,375.20-1,168,414.80-330,440.80

Finding the Fourth Proportional to 779,375.20, 1,168,414.80 and 330,440.80

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Solution

The fourth proportional to 779,375.20, 1,168,414.80 and 330,440.80 is: 495,386.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,375.20 : 1,168,414.80 = 330,440.80 : x
  2. Step 2: Convert to fraction form
    779,375.20/1,168,414.80 = 330,440.80/x
  3. Step 3: Cross multiply
    779,375.20x = 1,168,414.80 × 330,440.80
  4. Step 4: Simplify right side
    779,375.20x = 386,091,921,243.84
  5. Step 5: Solve for x
    x = 386,091,921,243.84/779,375.20
  6. Step 6: Final answer
    x = 495,386.46

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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.