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Finding the Fourth Proportional to 888,706.72, 1,226,490.96 and 506,628.64

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Solution

The fourth proportional to 888,706.72, 1,226,490.96 and 506,628.64 is: 699,190.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,706.72 : 1,226,490.96 = 506,628.64 : x
  2. Step 2: Convert to fraction form
    888,706.72/1,226,490.96 = 506,628.64/x
  3. Step 3: Cross multiply
    888,706.72x = 1,226,490.96 × 506,628.64
  4. Step 4: Simplify right side
    888,706.72x = 621,375,447,037.09
  5. Step 5: Solve for x
    x = 621,375,447,037.09/888,706.72
  6. Step 6: Final answer
    x = 699,190.67

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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.