Home / 809,511,972.66-1,117,126,896.02-438,234,004.04

Finding the Fourth Proportional to 809,511,972.66, 1,117,126,896.02 and 438,234,004.04

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Solution

The fourth proportional to 809,511,972.66, 1,117,126,896.02 and 438,234,004.04 is: 604,763,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,511,972.66 : 1,117,126,896.02 = 438,234,004.04 : x
  2. Step 2: Convert to fraction form
    809,511,972.66/1,117,126,896.02 = 438,234,004.04/x
  3. Step 3: Cross multiply
    809,511,972.66x = 1,117,126,896.02 × 438,234,004.04
  4. Step 4: Simplify right side
    809,511,972.66x = 489,562,992,655,844,608
  5. Step 5: Solve for x
    x = 489,562,992,655,844,608/809,511,972.66
  6. Step 6: Final answer
    x = 604,763,127.90

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.