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Finding the Fourth Proportional to 636,543.70, 878,412.77 and 350,063.75

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Solution

The fourth proportional to 636,543.70, 878,412.77 and 350,063.75 is: 483,078.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,543.70 : 878,412.77 = 350,063.75 : x
  2. Step 2: Convert to fraction form
    636,543.70/878,412.77 = 350,063.75/x
  3. Step 3: Cross multiply
    636,543.70x = 878,412.77 × 350,063.75
  4. Step 4: Simplify right side
    636,543.70x = 307,500,466,563.77
  5. Step 5: Solve for x
    x = 307,500,466,563.77/636,543.70
  6. Step 6: Final answer
    x = 483,078.33

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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.