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Finding the Fourth Proportional to 636,076.64, 877,779.24 and 349,590.80

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Solution

The fourth proportional to 636,076.64, 877,779.24 and 349,590.80 is: 482,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,076.64 : 877,779.24 = 349,590.80 : x
  2. Step 2: Convert to fraction form
    636,076.64/877,779.24 = 349,590.80/x
  3. Step 3: Cross multiply
    636,076.64x = 877,779.24 × 349,590.80
  4. Step 4: Simplify right side
    636,076.64x = 306,863,546,734.99
  5. Step 5: Solve for x
    x = 306,863,546,734.99/636,076.64
  6. Step 6: Final answer
    x = 482,431.72

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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.