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Finding the Fourth Proportional to 578,761.92, 798,696.99 and 320,644.35

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Solution

The fourth proportional to 578,761.92, 798,696.99 and 320,644.35 is: 442,492.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,761.92 : 798,696.99 = 320,644.35 : x
  2. Step 2: Convert to fraction form
    578,761.92/798,696.99 = 320,644.35/x
  3. Step 3: Cross multiply
    578,761.92x = 798,696.99 × 320,644.35
  4. Step 4: Simplify right side
    578,761.92x = 256,097,677,205.51
  5. Step 5: Solve for x
    x = 256,097,677,205.51/578,761.92
  6. Step 6: Final answer
    x = 442,492.27

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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.