Home / 1,205,246.40-1,663,235.40-661,391.28

Finding the Fourth Proportional to 1,205,246.40, 1,663,235.40 and 661,391.28

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Solution

The fourth proportional to 1,205,246.40, 1,663,235.40 and 661,391.28 is: 912,717.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,246.40 : 1,663,235.40 = 661,391.28 : x
  2. Step 2: Convert to fraction form
    1,205,246.40/1,663,235.40 = 661,391.28/x
  3. Step 3: Cross multiply
    1,205,246.40x = 1,663,235.40 × 661,391.28
  4. Step 4: Simplify right side
    1,205,246.40x = 1,100,049,390,147.31
  5. Step 5: Solve for x
    x = 1,100,049,390,147.31/1,205,246.40
  6. Step 6: Final answer
    x = 912,717.42

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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.