Home / 1,989,127.13-2,745,324.65-1,173,530.21

Finding the Fourth Proportional to 1,989,127.13, 2,745,324.65 and 1,173,530.21

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Solution

The fourth proportional to 1,989,127.13, 2,745,324.65 and 1,173,530.21 is: 1,619,665.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,127.13 : 2,745,324.65 = 1,173,530.21 : x
  2. Step 2: Convert to fraction form
    1,989,127.13/2,745,324.65 = 1,173,530.21/x
  3. Step 3: Cross multiply
    1,989,127.13x = 2,745,324.65 × 1,173,530.21
  4. Step 4: Simplify right side
    1,989,127.13x = 3,221,721,413,032.68
  5. Step 5: Solve for x
    x = 3,221,721,413,032.68/1,989,127.13
  6. Step 6: Final answer
    x = 1,619,665.91

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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.