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Finding the Fourth Proportional to 2,888,359.92, 3,985,978.68 and 1,663,989.84

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Solution

The fourth proportional to 2,888,359.92, 3,985,978.68 and 1,663,989.84 is: 2,296,330.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888,359.92 : 3,985,978.68 = 1,663,989.84 : x
  2. Step 2: Convert to fraction form
    2,888,359.92/3,985,978.68 = 1,663,989.84/x
  3. Step 3: Cross multiply
    2,888,359.92x = 3,985,978.68 × 1,663,989.84
  4. Step 4: Simplify right side
    2,888,359.92x = 6,632,628,025,976.61
  5. Step 5: Solve for x
    x = 6,632,628,025,976.61/2,888,359.92
  6. Step 6: Final answer
    x = 2,296,330.17

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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.