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Finding the Fourth Proportional to 1,019,917,819.20, 1,529,876,728.80 and 997,243,003.20

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Solution

The fourth proportional to 1,019,917,819.20, 1,529,876,728.80 and 997,243,003.20 is: 1,495,864,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,917,819.20 : 1,529,876,728.80 = 997,243,003.20 : x
  2. Step 2: Convert to fraction form
    1,019,917,819.20/1,529,876,728.80 = 997,243,003.20/x
  3. Step 3: Cross multiply
    1,019,917,819.20x = 1,529,876,728.80 × 997,243,003.20
  4. Step 4: Simplify right side
    1,019,917,819.20x = 1,525,658,863,554,304,000
  5. Step 5: Solve for x
    x = 1,525,658,863,554,304,000/1,019,917,819.20
  6. Step 6: Final answer
    x = 1,495,864,504.80

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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.