Home / 779,982-1,169,825.04-380,220.72

Finding the Fourth Proportional to 779,982, 1,169,825.04 and 380,220.72

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Solution

The fourth proportional to 779,982, 1,169,825.04 and 380,220.72 is: 570,258.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,982 : 1,169,825.04 = 380,220.72 : x
  2. Step 2: Convert to fraction form
    779,982/1,169,825.04 = 380,220.72/x
  3. Step 3: Cross multiply
    779,982x = 1,169,825.04 × 380,220.72
  4. Step 4: Simplify right side
    779,982x = 444,791,718,982.83
  5. Step 5: Solve for x
    x = 444,791,718,982.83/779,982
  6. Step 6: Final answer
    x = 570,258.95

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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.