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Finding the Fourth Proportional to 719,800,739.64, 993,324,778.64 and 389,775,878.64

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Solution

The fourth proportional to 719,800,739.64, 993,324,778.64 and 389,775,878.64 is: 537,890,581.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,800,739.64 : 993,324,778.64 = 389,775,878.64 : x
  2. Step 2: Convert to fraction form
    719,800,739.64/993,324,778.64 = 389,775,878.64/x
  3. Step 3: Cross multiply
    719,800,739.64x = 993,324,778.64 × 389,775,878.64
  4. Step 4: Simplify right side
    719,800,739.64x = 387,174,038,367,340,608
  5. Step 5: Solve for x
    x = 387,174,038,367,340,608/719,800,739.64
  6. Step 6: Final answer
    x = 537,890,581.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.