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Finding the Fourth Proportional to 636,551.40, 878,423.52 and 350,071.56

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Solution

The fourth proportional to 636,551.40, 878,423.52 and 350,071.56 is: 483,089.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,551.40 : 878,423.52 = 350,071.56 : x
  2. Step 2: Convert to fraction form
    636,551.40/878,423.52 = 350,071.56/x
  3. Step 3: Cross multiply
    636,551.40x = 878,423.52 × 350,071.56
  4. Step 4: Simplify right side
    636,551.40x = 307,511,091,987.09
  5. Step 5: Solve for x
    x = 307,511,091,987.09/636,551.40
  6. Step 6: Final answer
    x = 483,089.18

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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.