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Finding the Fourth Proportional to 658,840.40, 988,260.60 and 327,064.40

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Solution

The fourth proportional to 658,840.40, 988,260.60 and 327,064.40 is: 490,596.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,840.40 : 988,260.60 = 327,064.40 : x
  2. Step 2: Convert to fraction form
    658,840.40/988,260.60 = 327,064.40/x
  3. Step 3: Cross multiply
    658,840.40x = 988,260.60 × 327,064.40
  4. Step 4: Simplify right side
    658,840.40x = 323,224,860,182.64
  5. Step 5: Solve for x
    x = 323,224,860,182.64/658,840.40
  6. Step 6: Final answer
    x = 490,596.60

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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.