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Finding the Fourth Proportional to 641,611.92, 885,445.32 and 369,658.44

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Solution

The fourth proportional to 641,611.92, 885,445.32 and 369,658.44 is: 510,140.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,611.92 : 885,445.32 = 369,658.44 : x
  2. Step 2: Convert to fraction form
    641,611.92/885,445.32 = 369,658.44/x
  3. Step 3: Cross multiply
    641,611.92x = 885,445.32 × 369,658.44
  4. Step 4: Simplify right side
    641,611.92x = 327,312,335,696.50
  5. Step 5: Solve for x
    x = 327,312,335,696.50/641,611.92
  6. Step 6: Final answer
    x = 510,140.67

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1.5x scale

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.