Home / 660,522,665.90-990,783,998.85-442,844,432.30

Finding the Fourth Proportional to 660,522,665.90, 990,783,998.85 and 442,844,432.30

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Solution

The fourth proportional to 660,522,665.90, 990,783,998.85 and 442,844,432.30 is: 664,266,648.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,522,665.90 : 990,783,998.85 = 442,844,432.30 : x
  2. Step 2: Convert to fraction form
    660,522,665.90/990,783,998.85 = 442,844,432.30/x
  3. Step 3: Cross multiply
    660,522,665.90x = 990,783,998.85 × 442,844,432.30
  4. Step 4: Simplify right side
    660,522,665.90x = 438,763,177,502,652,096
  5. Step 5: Solve for x
    x = 438,763,177,502,652,096/660,522,665.90
  6. Step 6: Final answer
    x = 664,266,648.45

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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.