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Finding the Fourth Proportional to 662,959.30, 914,859.64 and 405,267.84

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Solution

The fourth proportional to 662,959.30, 914,859.64 and 405,267.84 is: 559,254.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,959.30 : 914,859.64 = 405,267.84 : x
  2. Step 2: Convert to fraction form
    662,959.30/914,859.64 = 405,267.84/x
  3. Step 3: Cross multiply
    662,959.30x = 914,859.64 × 405,267.84
  4. Step 4: Simplify right side
    662,959.30x = 370,763,190,205.98
  5. Step 5: Solve for x
    x = 370,763,190,205.98/662,959.30
  6. Step 6: Final answer
    x = 559,254.83

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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.