Home / 642,605.85-964,110.24-386,717.67

Finding the Fourth Proportional to 642,605.85, 964,110.24 and 386,717.67

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Solution

The fourth proportional to 642,605.85, 964,110.24 and 386,717.67 is: 580,197.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,605.85 : 964,110.24 = 386,717.67 : x
  2. Step 2: Convert to fraction form
    642,605.85/964,110.24 = 386,717.67/x
  3. Step 3: Cross multiply
    642,605.85x = 964,110.24 × 386,717.67
  4. Step 4: Simplify right side
    642,605.85x = 372,838,465,635.94
  5. Step 5: Solve for x
    x = 372,838,465,635.94/642,605.85
  6. Step 6: Final answer
    x = 580,197.75

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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.