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Finding the Fourth Proportional to 2,788,207.03, 4,181,978.31 and 766,656.37

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Solution

The fourth proportional to 2,788,207.03, 4,181,978.31 and 766,656.37 is: 1,149,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788,207.03 : 4,181,978.31 = 766,656.37 : x
  2. Step 2: Convert to fraction form
    2,788,207.03/4,181,978.31 = 766,656.37/x
  3. Step 3: Cross multiply
    2,788,207.03x = 4,181,978.31 × 766,656.37
  4. Step 4: Simplify right side
    2,788,207.03x = 3,206,140,310,563.34
  5. Step 5: Solve for x
    x = 3,206,140,310,563.34/2,788,207.03
  6. Step 6: Final answer
    x = 1,149,893.20

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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.