Home / 7,777,365.20-11,666,047.80-5,385,880.70

Finding the Fourth Proportional to 7,777,365.20, 11,666,047.80 and 5,385,880.70

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Solution

The fourth proportional to 7,777,365.20, 11,666,047.80 and 5,385,880.70 is: 8,078,821.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777,365.20 : 11,666,047.80 = 5,385,880.70 : x
  2. Step 2: Convert to fraction form
    7,777,365.20/11,666,047.80 = 5,385,880.70/x
  3. Step 3: Cross multiply
    7,777,365.20x = 11,666,047.80 × 5,385,880.70
  4. Step 4: Simplify right side
    7,777,365.20x = 62,831,941,691,297.47
  5. Step 5: Solve for x
    x = 62,831,941,691,297.47/7,777,365.20
  6. Step 6: Final answer
    x = 8,078,821.05

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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.