Home / 664,851,007.20-997,276,510.80-320,477,239.20

Finding the Fourth Proportional to 664,851,007.20, 997,276,510.80 and 320,477,239.20

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Solution

The fourth proportional to 664,851,007.20, 997,276,510.80 and 320,477,239.20 is: 480,715,858.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,851,007.20 : 997,276,510.80 = 320,477,239.20 : x
  2. Step 2: Convert to fraction form
    664,851,007.20/997,276,510.80 = 320,477,239.20/x
  3. Step 3: Cross multiply
    664,851,007.20x = 997,276,510.80 × 320,477,239.20
  4. Step 4: Simplify right side
    664,851,007.20x = 319,604,422,900,192,960
  5. Step 5: Solve for x
    x = 319,604,422,900,192,960/664,851,007.20
  6. Step 6: Final answer
    x = 480,715,858.80

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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.