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Finding the Fourth Proportional to 848,405.64, 1,272,655.56 and 279,763.76

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Solution

The fourth proportional to 848,405.64, 1,272,655.56 and 279,763.76 is: 419,661.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    848,405.64 : 1,272,655.56 = 279,763.76 : x
  2. Step 2: Convert to fraction form
    848,405.64/1,272,655.56 = 279,763.76/x
  3. Step 3: Cross multiply
    848,405.64x = 1,272,655.56 × 279,763.76
  4. Step 4: Simplify right side
    848,405.64x = 356,042,904,650.51
  5. Step 5: Solve for x
    x = 356,042,904,650.51/848,405.64
  6. Step 6: Final answer
    x = 419,661.17

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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.