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Finding the Fourth Proportional to 636,543.20, 878,412.08 and 350,063.25

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Solution

The fourth proportional to 636,543.20, 878,412.08 and 350,063.25 is: 483,077.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,543.20 : 878,412.08 = 350,063.25 : x
  2. Step 2: Convert to fraction form
    636,543.20/878,412.08 = 350,063.25/x
  3. Step 3: Cross multiply
    636,543.20x = 878,412.08 × 350,063.25
  4. Step 4: Simplify right side
    636,543.20x = 307,499,785,813.74
  5. Step 5: Solve for x
    x = 307,499,785,813.74/636,543.20
  6. Step 6: Final answer
    x = 483,077.64

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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.