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Finding the Fourth Proportional to 637,446, 879,675.48 and 354,822

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Solution

The fourth proportional to 637,446, 879,675.48 and 354,822 is: 489,654.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,446 : 879,675.48 = 354,822 : x
  2. Step 2: Convert to fraction form
    637,446/879,675.48 = 354,822/x
  3. Step 3: Cross multiply
    637,446x = 879,675.48 × 354,822
  4. Step 4: Simplify right side
    637,446x = 312,128,213,164.56
  5. Step 5: Solve for x
    x = 312,128,213,164.56/637,446
  6. Step 6: Final answer
    x = 489,654.36

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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.