Home / 787,328,002.40-1,180,992,003.60-419,995,983.20

Finding the Fourth Proportional to 787,328,002.40, 1,180,992,003.60 and 419,995,983.20

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Solution

The fourth proportional to 787,328,002.40, 1,180,992,003.60 and 419,995,983.20 is: 629,993,974.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,328,002.40 : 1,180,992,003.60 = 419,995,983.20 : x
  2. Step 2: Convert to fraction form
    787,328,002.40/1,180,992,003.60 = 419,995,983.20/x
  3. Step 3: Cross multiply
    787,328,002.40x = 1,180,992,003.60 × 419,995,983.20
  4. Step 4: Simplify right side
    787,328,002.40x = 496,011,897,703,319,872
  5. Step 5: Solve for x
    x = 496,011,897,703,319,872/787,328,002.40
  6. Step 6: Final answer
    x = 629,993,974.80

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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.