Home / 429,823.20-644,734.80-297,112.80

Finding the Fourth Proportional to 429,823.20, 644,734.80 and 297,112.80

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Solution

The fourth proportional to 429,823.20, 644,734.80 and 297,112.80 is: 445,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,823.20 : 644,734.80 = 297,112.80 : x
  2. Step 2: Convert to fraction form
    429,823.20/644,734.80 = 297,112.80/x
  3. Step 3: Cross multiply
    429,823.20x = 644,734.80 × 297,112.80
  4. Step 4: Simplify right side
    429,823.20x = 191,558,961,685.44
  5. Step 5: Solve for x
    x = 191,558,961,685.44/429,823.20
  6. Step 6: Final answer
    x = 445,669.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.