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Finding the Fourth Proportional to 636,701.46, 878,629.50 and 350,221.47

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Solution

The fourth proportional to 636,701.46, 878,629.50 and 350,221.47 is: 483,295.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,701.46 : 878,629.50 = 350,221.47 : x
  2. Step 2: Convert to fraction form
    636,701.46/878,629.50 = 350,221.47/x
  3. Step 3: Cross multiply
    636,701.46x = 878,629.50 × 350,221.47
  4. Step 4: Simplify right side
    636,701.46x = 307,714,915,075.37
  5. Step 5: Solve for x
    x = 307,714,915,075.37/636,701.46
  6. Step 6: Final answer
    x = 483,295.44

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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.