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Finding the Fourth Proportional to 386,942,491.40, 580,413,737.10 and 310,414,987.40

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Solution

The fourth proportional to 386,942,491.40, 580,413,737.10 and 310,414,987.40 is: 465,622,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,942,491.40 : 580,413,737.10 = 310,414,987.40 : x
  2. Step 2: Convert to fraction form
    386,942,491.40/580,413,737.10 = 310,414,987.40/x
  3. Step 3: Cross multiply
    386,942,491.40x = 580,413,737.10 × 310,414,987.40
  4. Step 4: Simplify right side
    386,942,491.40x = 180,169,122,888,683,392
  5. Step 5: Solve for x
    x = 180,169,122,888,683,392/386,942,491.40
  6. Step 6: Final answer
    x = 465,622,481.10

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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.