Home / 919,934,979.40-1,379,902,469.10-828,101,974.60

Finding the Fourth Proportional to 919,934,979.40, 1,379,902,469.10 and 828,101,974.60

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Solution

The fourth proportional to 919,934,979.40, 1,379,902,469.10 and 828,101,974.60 is: 1,242,152,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,934,979.40 : 1,379,902,469.10 = 828,101,974.60 : x
  2. Step 2: Convert to fraction form
    919,934,979.40/1,379,902,469.10 = 828,101,974.60/x
  3. Step 3: Cross multiply
    919,934,979.40x = 1,379,902,469.10 × 828,101,974.60
  4. Step 4: Simplify right side
    919,934,979.40x = 1,142,699,959,417,125,376
  5. Step 5: Solve for x
    x = 1,142,699,959,417,125,376/919,934,979.40
  6. Step 6: Final answer
    x = 1,242,152,961.90

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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.