Home / 905,661.78-1,249,826.19-497,801.33

Finding the Fourth Proportional to 905,661.78, 1,249,826.19 and 497,801.33

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Solution

The fourth proportional to 905,661.78, 1,249,826.19 and 497,801.33 is: 686,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,661.78 : 1,249,826.19 = 497,801.33 : x
  2. Step 2: Convert to fraction form
    905,661.78/1,249,826.19 = 497,801.33/x
  3. Step 3: Cross multiply
    905,661.78x = 1,249,826.19 × 497,801.33
  4. Step 4: Simplify right side
    905,661.78x = 622,165,139,650.83
  5. Step 5: Solve for x
    x = 622,165,139,650.83/905,661.78
  6. Step 6: Final answer
    x = 686,972.94

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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.