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Finding the Fourth Proportional to 919,873,343.20, 1,379,810,014.80 and 738,474,815.20

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Solution

The fourth proportional to 919,873,343.20, 1,379,810,014.80 and 738,474,815.20 is: 1,107,712,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,873,343.20 : 1,379,810,014.80 = 738,474,815.20 : x
  2. Step 2: Convert to fraction form
    919,873,343.20/1,379,810,014.80 = 738,474,815.20/x
  3. Step 3: Cross multiply
    919,873,343.20x = 1,379,810,014.80 × 738,474,815.20
  4. Step 4: Simplify right side
    919,873,343.20x = 1,018,954,945,690,539,264
  5. Step 5: Solve for x
    x = 1,018,954,945,690,539,264/919,873,343.20
  6. Step 6: Final answer
    x = 1,107,712,222.80

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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.