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Finding the Fourth Proportional to 646,640.01, 892,205.83 and 425,854.51

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Solution

The fourth proportional to 646,640.01, 892,205.83 and 425,854.51 is: 587,575.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,640.01 : 892,205.83 = 425,854.51 : x
  2. Step 2: Convert to fraction form
    646,640.01/892,205.83 = 425,854.51/x
  3. Step 3: Cross multiply
    646,640.01x = 892,205.83 × 425,854.51
  4. Step 4: Simplify right side
    646,640.01x = 379,949,876,553.79
  5. Step 5: Solve for x
    x = 379,949,876,553.79/646,640.01
  6. Step 6: Final answer
    x = 587,575.58

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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.