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Finding the Fourth Proportional to 646,648.78, 892,375.58 and 374,874.24

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Solution

The fourth proportional to 646,648.78, 892,375.58 and 374,874.24 is: 517,326.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,648.78 : 892,375.58 = 374,874.24 : x
  2. Step 2: Convert to fraction form
    646,648.78/892,375.58 = 374,874.24/x
  3. Step 3: Cross multiply
    646,648.78x = 892,375.58 × 374,874.24
  4. Step 4: Simplify right side
    646,648.78x = 334,528,617,865.94
  5. Step 5: Solve for x
    x = 334,528,617,865.94/646,648.78
  6. Step 6: Final answer
    x = 517,326.60

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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.