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Finding the Fourth Proportional to 488,455.20, 732,682.80 and 399,808.80

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Solution

The fourth proportional to 488,455.20, 732,682.80 and 399,808.80 is: 599,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,455.20 : 732,682.80 = 399,808.80 : x
  2. Step 2: Convert to fraction form
    488,455.20/732,682.80 = 399,808.80/x
  3. Step 3: Cross multiply
    488,455.20x = 732,682.80 × 399,808.80
  4. Step 4: Simplify right side
    488,455.20x = 292,933,031,048.64
  5. Step 5: Solve for x
    x = 292,933,031,048.64/488,455.20
  6. Step 6: Final answer
    x = 599,713.20

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Similar ratio
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1.5x scale

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.