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Finding the Fourth Proportional to 636,705.09, 878,638.59 and 350,219.03

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Solution

The fourth proportional to 636,705.09, 878,638.59 and 350,219.03 is: 483,294.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,705.09 : 878,638.59 = 350,219.03 : x
  2. Step 2: Convert to fraction form
    636,705.09/878,638.59 = 350,219.03/x
  3. Step 3: Cross multiply
    636,705.09x = 878,638.59 × 350,219.03
  4. Step 4: Simplify right side
    636,705.09x = 307,715,950,317.18
  5. Step 5: Solve for x
    x = 307,715,950,317.18/636,705.09
  6. Step 6: Final answer
    x = 483,294.31

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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.