Home / 429,629.06-644,360.54-408,291.50

Finding the Fourth Proportional to 429,629.06, 644,360.54 and 408,291.50

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Solution

The fourth proportional to 429,629.06, 644,360.54 and 408,291.50 is: 612,358.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,629.06 : 644,360.54 = 408,291.50 : x
  2. Step 2: Convert to fraction form
    429,629.06/644,360.54 = 408,291.50/x
  3. Step 3: Cross multiply
    429,629.06x = 644,360.54 × 408,291.50
  4. Step 4: Simplify right side
    429,629.06x = 263,086,926,154.15
  5. Step 5: Solve for x
    x = 263,086,926,154.15/429,629.06
  6. Step 6: Final answer
    x = 612,358.32

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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.