Home / 7,876,997.28-10,869,999.12-4,977,943.20

Finding the Fourth Proportional to 7,876,997.28, 10,869,999.12 and 4,977,943.20

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Solution

The fourth proportional to 7,876,997.28, 10,869,999.12 and 4,977,943.20 is: 6,869,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876,997.28 : 10,869,999.12 = 4,977,943.20 : x
  2. Step 2: Convert to fraction form
    7,876,997.28/10,869,999.12 = 4,977,943.20/x
  3. Step 3: Cross multiply
    7,876,997.28x = 10,869,999.12 × 4,977,943.20
  4. Step 4: Simplify right side
    7,876,997.28x = 54,110,238,203,409.98
  5. Step 5: Solve for x
    x = 54,110,238,203,409.98/7,876,997.28
  6. Step 6: Final answer
    x = 6,869,399.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.