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Finding the Fourth Proportional to 688,208.92, 949,745.60 and 382,270.64

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Solution

The fourth proportional to 688,208.92, 949,745.60 and 382,270.64 is: 527,543.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,208.92 : 949,745.60 = 382,270.64 : x
  2. Step 2: Convert to fraction form
    688,208.92/949,745.60 = 382,270.64/x
  3. Step 3: Cross multiply
    688,208.92x = 949,745.60 × 382,270.64
  4. Step 4: Simplify right side
    688,208.92x = 363,059,858,349.18
  5. Step 5: Solve for x
    x = 363,059,858,349.18/688,208.92
  6. Step 6: Final answer
    x = 527,543.09

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.