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Finding the Fourth Proportional to 636,820.65, 878,780.75 and 350,333.37

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Solution

The fourth proportional to 636,820.65, 878,780.75 and 350,333.37 is: 483,442.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,820.65 : 878,780.75 = 350,333.37 : x
  2. Step 2: Convert to fraction form
    636,820.65/878,780.75 = 350,333.37/x
  3. Step 3: Cross multiply
    636,820.65x = 878,780.75 × 350,333.37
  4. Step 4: Simplify right side
    636,820.65x = 307,866,219,886.96
  5. Step 5: Solve for x
    x = 307,866,219,886.96/636,820.65
  6. Step 6: Final answer
    x = 483,442.58

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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.