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Finding the Fourth Proportional to 636,252.60, 878,045.36 and 349,779.90

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Solution

The fourth proportional to 636,252.60, 878,045.36 and 349,779.90 is: 482,705.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,252.60 : 878,045.36 = 349,779.90 : x
  2. Step 2: Convert to fraction form
    636,252.60/878,045.36 = 349,779.90/x
  3. Step 3: Cross multiply
    636,252.60x = 878,045.36 × 349,779.90
  4. Step 4: Simplify right side
    636,252.60x = 307,122,616,467.37
  5. Step 5: Solve for x
    x = 307,122,616,467.37/636,252.60
  6. Step 6: Final answer
    x = 482,705.48

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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.