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Finding the Fourth Proportional to 636,656.66, 878,586.64 and 350,198.54

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Solution

The fourth proportional to 636,656.66, 878,586.64 and 350,198.54 is: 483,274.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,656.66 : 878,586.64 = 350,198.54 : x
  2. Step 2: Convert to fraction form
    636,656.66/878,586.64 = 350,198.54/x
  3. Step 3: Cross multiply
    636,656.66x = 878,586.64 × 350,198.54
  4. Step 4: Simplify right side
    636,656.66x = 307,679,758,591.51
  5. Step 5: Solve for x
    x = 307,679,758,591.51/636,656.66
  6. Step 6: Final answer
    x = 483,274.23

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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.