Home / 826,719,758.80-1,239,649,047.92-389,903,157.44

Finding the Fourth Proportional to 826,719,758.80, 1,239,649,047.92 and 389,903,157.44

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Solution

The fourth proportional to 826,719,758.80, 1,239,649,047.92 and 389,903,157.44 is: 584,651,658.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,719,758.80 : 1,239,649,047.92 = 389,903,157.44 : x
  2. Step 2: Convert to fraction form
    826,719,758.80/1,239,649,047.92 = 389,903,157.44/x
  3. Step 3: Cross multiply
    826,719,758.80x = 1,239,649,047.92 × 389,903,157.44
  4. Step 4: Simplify right side
    826,719,758.80x = 483,343,077,901,497,920
  5. Step 5: Solve for x
    x = 483,343,077,901,497,920/826,719,758.80
  6. Step 6: Final answer
    x = 584,651,658.26

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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.