Home / 792,019,931.80-1,187,557,505.70-485,532,002.20

Finding the Fourth Proportional to 792,019,931.80, 1,187,557,505.70 and 485,532,002.20

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Solution

The fourth proportional to 792,019,931.80, 1,187,557,505.70 and 485,532,002.20 is: 728,008,412.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,019,931.80 : 1,187,557,505.70 = 485,532,002.20 : x
  2. Step 2: Convert to fraction form
    792,019,931.80/1,187,557,505.70 = 485,532,002.20/x
  3. Step 3: Cross multiply
    792,019,931.80x = 1,187,557,505.70 × 485,532,002.20
  4. Step 4: Simplify right side
    792,019,931.80x = 576,597,173,470,158,976
  5. Step 5: Solve for x
    x = 576,597,173,470,158,976/792,019,931.80
  6. Step 6: Final answer
    x = 728,008,412.82

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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.