Home / 1,309,400,990.07-1,809,337,032.13-932,403,067.65

Finding the Fourth Proportional to 1,309,400,990.07, 1,809,337,032.13 and 932,403,067.65

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Solution

The fourth proportional to 1,309,400,990.07, 1,809,337,032.13 and 932,403,067.65 is: 1,288,399,361.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,400,990.07 : 1,809,337,032.13 = 932,403,067.65 : x
  2. Step 2: Convert to fraction form
    1,309,400,990.07/1,809,337,032.13 = 932,403,067.65/x
  3. Step 3: Cross multiply
    1,309,400,990.07x = 1,809,337,032.13 × 932,403,067.65
  4. Step 4: Simplify right side
    1,309,400,990.07x = 1,687,031,399,166,142,976
  5. Step 5: Solve for x
    x = 1,687,031,399,166,142,976/1,309,400,990.07
  6. Step 6: Final answer
    x = 1,288,399,361.21

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Double scale
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1.5x scale

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.