Home / 720,591,812,633.85-994,445,371,842.38-395,442,740,289.75

Finding the Fourth Proportional to 720,591,812,633.85, 994,445,371,842.38 and 395,442,740,289.75

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Solution

The fourth proportional to 720,591,812,633.85, 994,445,371,842.38 and 395,442,740,289.75 is: 545,726,715,201.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,591,812,633.85 : 994,445,371,842.38 = 395,442,740,289.75 : x
  2. Step 2: Convert to fraction form
    720,591,812,633.85/994,445,371,842.38 = 395,442,740,289.75/x
  3. Step 3: Cross multiply
    720,591,812,633.85x = 994,445,371,842.38 × 395,442,740,289.75
  4. Step 4: Simplify right side
    720,591,812,633.85x = 393,246,202,909,810,130,681,856
  5. Step 5: Solve for x
    x = 393,246,202,909,810,130,681,856/720,591,812,633.85
  6. Step 6: Final answer
    x = 545,726,715,201.56

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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.