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Finding the Fourth Proportional to 3,380,055.80, 5,070,914.80 and 983,921.20

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Solution

The fourth proportional to 3,380,055.80, 5,070,914.80 and 983,921.20 is: 1,476,123.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380,055.80 : 5,070,914.80 = 983,921.20 : x
  2. Step 2: Convert to fraction form
    3,380,055.80/5,070,914.80 = 983,921.20/x
  3. Step 3: Cross multiply
    3,380,055.80x = 5,070,914.80 × 983,921.20
  4. Step 4: Simplify right side
    3,380,055.80x = 4,989,380,575,113.76
  5. Step 5: Solve for x
    x = 4,989,380,575,113.76/3,380,055.80
  6. Step 6: Final answer
    x = 1,476,123.73

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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.