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Finding the Fourth Proportional to 818,169,751.80, 1,129,066,778.70 and 446,891,671.80

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Solution

The fourth proportional to 818,169,751.80, 1,129,066,778.70 and 446,891,671.80 is: 616,706,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,169,751.80 : 1,129,066,778.70 = 446,891,671.80 : x
  2. Step 2: Convert to fraction form
    818,169,751.80/1,129,066,778.70 = 446,891,671.80/x
  3. Step 3: Cross multiply
    818,169,751.80x = 1,129,066,778.70 × 446,891,671.80
  4. Step 4: Simplify right side
    818,169,751.80x = 504,570,540,307,083,648
  5. Step 5: Solve for x
    x = 504,570,540,307,083,648/818,169,751.80
  6. Step 6: Final answer
    x = 616,706,422.10

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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.