Home / 1,420,107,211.20-2,130,160,816.80-800,234,428.80

Finding the Fourth Proportional to 1,420,107,211.20, 2,130,160,816.80 and 800,234,428.80

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Solution

The fourth proportional to 1,420,107,211.20, 2,130,160,816.80 and 800,234,428.80 is: 1,200,351,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,107,211.20 : 2,130,160,816.80 = 800,234,428.80 : x
  2. Step 2: Convert to fraction form
    1,420,107,211.20/2,130,160,816.80 = 800,234,428.80/x
  3. Step 3: Cross multiply
    1,420,107,211.20x = 2,130,160,816.80 × 800,234,428.80
  4. Step 4: Simplify right side
    1,420,107,211.20x = 1,704,628,024,484,089,344
  5. Step 5: Solve for x
    x = 1,704,628,024,484,089,344/1,420,107,211.20
  6. Step 6: Final answer
    x = 1,200,351,643.20

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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.