Home / 642,827.50-964,249.48-443,094.28

Finding the Fourth Proportional to 642,827.50, 964,249.48 and 443,094.28

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Solution

The fourth proportional to 642,827.50, 964,249.48 and 443,094.28 is: 664,647.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,827.50 : 964,249.48 = 443,094.28 : x
  2. Step 2: Convert to fraction form
    642,827.50/964,249.48 = 443,094.28/x
  3. Step 3: Cross multiply
    642,827.50x = 964,249.48 × 443,094.28
  4. Step 4: Simplify right side
    642,827.50x = 427,253,429,080.97
  5. Step 5: Solve for x
    x = 427,253,429,080.97/642,827.50
  6. Step 6: Final answer
    x = 664,647.09

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Double scale
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1.5x scale

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.