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Finding the Fourth Proportional to 638,442,968.55, 957,664,452.83 and 638,442,968.55

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Solution

The fourth proportional to 638,442,968.55, 957,664,452.83 and 638,442,968.55 is: 957,664,452.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,442,968.55 : 957,664,452.83 = 638,442,968.55 : x
  2. Step 2: Convert to fraction form
    638,442,968.55/957,664,452.83 = 638,442,968.55/x
  3. Step 3: Cross multiply
    638,442,968.55x = 957,664,452.83 × 638,442,968.55
  4. Step 4: Simplify right side
    638,442,968.55x = 611,414,136,136,404,480
  5. Step 5: Solve for x
    x = 611,414,136,136,404,480/638,442,968.55
  6. Step 6: Final answer
    x = 957,664,452.83

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1.5x scale

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.