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Finding the Fourth Proportional to 7,556,978.80, 11,335,468.20 and 7,242,050.80

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Solution

The fourth proportional to 7,556,978.80, 11,335,468.20 and 7,242,050.80 is: 10,863,076.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,556,978.80 : 11,335,468.20 = 7,242,050.80 : x
  2. Step 2: Convert to fraction form
    7,556,978.80/11,335,468.20 = 7,242,050.80/x
  3. Step 3: Cross multiply
    7,556,978.80x = 11,335,468.20 × 7,242,050.80
  4. Step 4: Simplify right side
    7,556,978.80x = 82,092,036,546,184.55
  5. Step 5: Solve for x
    x = 82,092,036,546,184.55/7,556,978.80
  6. Step 6: Final answer
    x = 10,863,076.20

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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.