Home / 919,396,080.80-1,379,094,121.20-611,690,429.60

Finding the Fourth Proportional to 919,396,080.80, 1,379,094,121.20 and 611,690,429.60

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Solution

The fourth proportional to 919,396,080.80, 1,379,094,121.20 and 611,690,429.60 is: 917,535,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,396,080.80 : 1,379,094,121.20 = 611,690,429.60 : x
  2. Step 2: Convert to fraction form
    919,396,080.80/1,379,094,121.20 = 611,690,429.60/x
  3. Step 3: Cross multiply
    919,396,080.80x = 1,379,094,121.20 × 611,690,429.60
  4. Step 4: Simplify right side
    919,396,080.80x = 843,578,675,455,662,592
  5. Step 5: Solve for x
    x = 843,578,675,455,662,592/919,396,080.80
  6. Step 6: Final answer
    x = 917,535,644.40

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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.