Home / 7,771,990.80-11,657,986.20-5,656,918.80

Finding the Fourth Proportional to 7,771,990.80, 11,657,986.20 and 5,656,918.80

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Solution

The fourth proportional to 7,771,990.80, 11,657,986.20 and 5,656,918.80 is: 8,485,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771,990.80 : 11,657,986.20 = 5,656,918.80 : x
  2. Step 2: Convert to fraction form
    7,771,990.80/11,657,986.20 = 5,656,918.80/x
  3. Step 3: Cross multiply
    7,771,990.80x = 11,657,986.20 × 5,656,918.80
  4. Step 4: Simplify right side
    7,771,990.80x = 65,948,281,304,920.55
  5. Step 5: Solve for x
    x = 65,948,281,304,920.55/7,771,990.80
  6. Step 6: Final answer
    x = 8,485,378.20

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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.