Home / 1,243,205,067.85-1,715,614,266.04-678,689,949.42

Finding the Fourth Proportional to 1,243,205,067.85, 1,715,614,266.04 and 678,689,949.42

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Solution

The fourth proportional to 1,243,205,067.85, 1,715,614,266.04 and 678,689,949.42 is: 936,587,365.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,205,067.85 : 1,715,614,266.04 = 678,689,949.42 : x
  2. Step 2: Convert to fraction form
    1,243,205,067.85/1,715,614,266.04 = 678,689,949.42/x
  3. Step 3: Cross multiply
    1,243,205,067.85x = 1,715,614,266.04 × 678,689,949.42
  4. Step 4: Simplify right side
    1,243,205,067.85x = 1,164,370,159,437,298,944
  5. Step 5: Solve for x
    x = 1,164,370,159,437,298,944/1,243,205,067.85
  6. Step 6: Final answer
    x = 936,587,365.63

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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.