Home / 660,455,211.40-990,682,817.10-272,078,128.60

Finding the Fourth Proportional to 660,455,211.40, 990,682,817.10 and 272,078,128.60

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Solution

The fourth proportional to 660,455,211.40, 990,682,817.10 and 272,078,128.60 is: 408,117,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,455,211.40 : 990,682,817.10 = 272,078,128.60 : x
  2. Step 2: Convert to fraction form
    660,455,211.40/990,682,817.10 = 272,078,128.60/x
  3. Step 3: Cross multiply
    660,455,211.40x = 990,682,817.10 × 272,078,128.60
  4. Step 4: Simplify right side
    660,455,211.40x = 269,543,126,912,744,096
  5. Step 5: Solve for x
    x = 269,543,126,912,744,096/660,455,211.40
  6. Step 6: Final answer
    x = 408,117,192.90

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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.