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Finding the Fourth Proportional to 7,721,420.24, 11,574,978.73 and 2,861,018.62

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Solution

The fourth proportional to 7,721,420.24, 11,574,978.73 and 2,861,018.62 is: 4,288,878.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721,420.24 : 11,574,978.73 = 2,861,018.62 : x
  2. Step 2: Convert to fraction form
    7,721,420.24/11,574,978.73 = 2,861,018.62/x
  3. Step 3: Cross multiply
    7,721,420.24x = 11,574,978.73 × 2,861,018.62
  4. Step 4: Simplify right side
    7,721,420.24x = 33,116,229,693,283.02
  5. Step 5: Solve for x
    x = 33,116,229,693,283.02/7,721,420.24
  6. Step 6: Final answer
    x = 4,288,878.04

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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.