Home / 639,432,176.78-959,182,138.43-197,078,683.04

Finding the Fourth Proportional to 639,432,176.78, 959,182,138.43 and 197,078,683.04

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Solution

The fourth proportional to 639,432,176.78, 959,182,138.43 and 197,078,683.04 is: 295,628,464.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,432,176.78 : 959,182,138.43 = 197,078,683.04 : x
  2. Step 2: Convert to fraction form
    639,432,176.78/959,182,138.43 = 197,078,683.04/x
  3. Step 3: Cross multiply
    639,432,176.78x = 959,182,138.43 × 197,078,683.04
  4. Step 4: Simplify right side
    639,432,176.78x = 189,034,352,636,289,952
  5. Step 5: Solve for x
    x = 189,034,352,636,289,952/639,432,176.78
  6. Step 6: Final answer
    x = 295,628,464.60

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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.