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Finding the Fourth Proportional to 440,577,999.70, 660,866,999.55 and 210,995,487.70

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Solution

The fourth proportional to 440,577,999.70, 660,866,999.55 and 210,995,487.70 is: 316,493,231.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,577,999.70 : 660,866,999.55 = 210,995,487.70 : x
  2. Step 2: Convert to fraction form
    440,577,999.70/660,866,999.55 = 210,995,487.70/x
  3. Step 3: Cross multiply
    440,577,999.70x = 660,866,999.55 × 210,995,487.70
  4. Step 4: Simplify right side
    440,577,999.70x = 139,439,954,874,887,920
  5. Step 5: Solve for x
    x = 139,439,954,874,887,920/440,577,999.70
  6. Step 6: Final answer
    x = 316,493,231.55

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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.