Home / 686,790.40-1,027,269.60-616,223.20

Finding the Fourth Proportional to 686,790.40, 1,027,269.60 and 616,223.20

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Solution

The fourth proportional to 686,790.40, 1,027,269.60 and 616,223.20 is: 921,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,790.40 : 1,027,269.60 = 616,223.20 : x
  2. Step 2: Convert to fraction form
    686,790.40/1,027,269.60 = 616,223.20/x
  3. Step 3: Cross multiply
    686,790.40x = 1,027,269.60 × 616,223.20
  4. Step 4: Simplify right side
    686,790.40x = 633,027,360,174.72
  5. Step 5: Solve for x
    x = 633,027,360,174.72/686,790.40
  6. Step 6: Final answer
    x = 921,718.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.