Home / 429,920.56-644,796.76-408,583.36

Finding the Fourth Proportional to 429,920.56, 644,796.76 and 408,583.36

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Solution

The fourth proportional to 429,920.56, 644,796.76 and 408,583.36 is: 612,795.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,920.56 : 644,796.76 = 408,583.36 : x
  2. Step 2: Convert to fraction form
    429,920.56/644,796.76 = 408,583.36/x
  3. Step 3: Cross multiply
    429,920.56x = 644,796.76 × 408,583.36
  4. Step 4: Simplify right side
    429,920.56x = 263,453,226,717.91
  5. Step 5: Solve for x
    x = 263,453,226,717.91/429,920.56
  6. Step 6: Final answer
    x = 612,795.13

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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.