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Finding the Fourth Proportional to 636,548.70, 878,419.66 and 350,068.75

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Solution

The fourth proportional to 636,548.70, 878,419.66 and 350,068.75 is: 483,085.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,548.70 : 878,419.66 = 350,068.75 : x
  2. Step 2: Convert to fraction form
    636,548.70/878,419.66 = 350,068.75/x
  3. Step 3: Cross multiply
    636,548.70x = 878,419.66 × 350,068.75
  4. Step 4: Simplify right side
    636,548.70x = 307,507,272,351.63
  5. Step 5: Solve for x
    x = 307,507,272,351.63/636,548.70
  6. Step 6: Final answer
    x = 483,085.23

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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.