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Finding the Fourth Proportional to 665,715.60, 998,573.40 and 292,467.60

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Solution

The fourth proportional to 665,715.60, 998,573.40 and 292,467.60 is: 438,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,715.60 : 998,573.40 = 292,467.60 : x
  2. Step 2: Convert to fraction form
    665,715.60/998,573.40 = 292,467.60/x
  3. Step 3: Cross multiply
    665,715.60x = 998,573.40 × 292,467.60
  4. Step 4: Simplify right side
    665,715.60x = 292,050,365,721.84
  5. Step 5: Solve for x
    x = 292,050,365,721.84/665,715.60
  6. Step 6: Final answer
    x = 438,701.40

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Double scale
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Similar ratio
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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.