Home / 639,397,140.30-959,095,710.45-394,030,830.60

Finding the Fourth Proportional to 639,397,140.30, 959,095,710.45 and 394,030,830.60

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Solution

The fourth proportional to 639,397,140.30, 959,095,710.45 and 394,030,830.60 is: 591,046,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,397,140.30 : 959,095,710.45 = 394,030,830.60 : x
  2. Step 2: Convert to fraction form
    639,397,140.30/959,095,710.45 = 394,030,830.60/x
  3. Step 3: Cross multiply
    639,397,140.30x = 959,095,710.45 × 394,030,830.60
  4. Step 4: Simplify right side
    639,397,140.30x = 377,913,279,413,510,656
  5. Step 5: Solve for x
    x = 377,913,279,413,510,656/639,397,140.30
  6. Step 6: Final answer
    x = 591,046,245.90

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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.