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Finding the Fourth Proportional to 465,769.20, 699,498.60 and 407,708.40

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Solution

The fourth proportional to 465,769.20, 699,498.60 and 407,708.40 is: 612,302.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,769.20 : 699,498.60 = 407,708.40 : x
  2. Step 2: Convert to fraction form
    465,769.20/699,498.60 = 407,708.40/x
  3. Step 3: Cross multiply
    465,769.20x = 699,498.60 × 407,708.40
  4. Step 4: Simplify right side
    465,769.20x = 285,191,455,008.24
  5. Step 5: Solve for x
    x = 285,191,455,008.24/465,769.20
  6. Step 6: Final answer
    x = 612,302.09

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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.