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Finding the Fourth Proportional to 700,787,480.80, 967,092,986.72 and 387,542,768.80

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Solution

The fourth proportional to 700,787,480.80, 967,092,986.72 and 387,542,768.80 is: 534,812,484.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,787,480.80 : 967,092,986.72 = 387,542,768.80 : x
  2. Step 2: Convert to fraction form
    700,787,480.80/967,092,986.72 = 387,542,768.80/x
  3. Step 3: Cross multiply
    700,787,480.80x = 967,092,986.72 × 387,542,768.80
  4. Step 4: Simplify right side
    700,787,480.80x = 374,789,893,760,530,432
  5. Step 5: Solve for x
    x = 374,789,893,760,530,432/700,787,480.80
  6. Step 6: Final answer
    x = 534,812,484.57

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