Home / 781,778,396.29-1,172,666,604.13-199,512,654.89

Finding the Fourth Proportional to 781,778,396.29, 1,172,666,604.13 and 199,512,654.89

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Solution

The fourth proportional to 781,778,396.29, 1,172,666,604.13 and 199,512,654.89 is: 299,268,729.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,778,396.29 : 1,172,666,604.13 = 199,512,654.89 : x
  2. Step 2: Convert to fraction form
    781,778,396.29/1,172,666,604.13 = 199,512,654.89/x
  3. Step 3: Cross multiply
    781,778,396.29x = 1,172,666,604.13 × 199,512,654.89
  4. Step 4: Simplify right side
    781,778,396.29x = 233,961,827,489,819,360
  5. Step 5: Solve for x
    x = 233,961,827,489,819,360/781,778,396.29
  6. Step 6: Final answer
    x = 299,268,729.61

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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.