Home / 809,511,971.15-1,117,126,893.95-438,234,002.53

Finding the Fourth Proportional to 809,511,971.15, 1,117,126,893.95 and 438,234,002.53

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Solution

The fourth proportional to 809,511,971.15, 1,117,126,893.95 and 438,234,002.53 is: 604,763,125.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,511,971.15 : 1,117,126,893.95 = 438,234,002.53 : x
  2. Step 2: Convert to fraction form
    809,511,971.15/1,117,126,893.95 = 438,234,002.53/x
  3. Step 3: Cross multiply
    809,511,971.15x = 1,117,126,893.95 × 438,234,002.53
  4. Step 4: Simplify right side
    809,511,971.15x = 489,562,990,066,296,640
  5. Step 5: Solve for x
    x = 489,562,990,066,296,640/809,511,971.15
  6. Step 6: Final answer
    x = 604,763,125.82

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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.