Home / 664,851,008.20-997,276,512.30-320,477,240.20

Finding the Fourth Proportional to 664,851,008.20, 997,276,512.30 and 320,477,240.20

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Solution

The fourth proportional to 664,851,008.20, 997,276,512.30 and 320,477,240.20 is: 480,715,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,851,008.20 : 997,276,512.30 = 320,477,240.20 : x
  2. Step 2: Convert to fraction form
    664,851,008.20/997,276,512.30 = 320,477,240.20/x
  3. Step 3: Cross multiply
    664,851,008.20x = 997,276,512.30 × 320,477,240.20
  4. Step 4: Simplify right side
    664,851,008.20x = 319,604,424,378,185,344
  5. Step 5: Solve for x
    x = 319,604,424,378,185,344/664,851,008.20
  6. Step 6: Final answer
    x = 480,715,860.30

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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.