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Finding the Fourth Proportional to 665,054.60, 997,581.90 and 487,907.60

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Solution

The fourth proportional to 665,054.60, 997,581.90 and 487,907.60 is: 731,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,054.60 : 997,581.90 = 487,907.60 : x
  2. Step 2: Convert to fraction form
    665,054.60/997,581.90 = 487,907.60/x
  3. Step 3: Cross multiply
    665,054.60x = 997,581.90 × 487,907.60
  4. Step 4: Simplify right side
    665,054.60x = 486,727,790,632.44
  5. Step 5: Solve for x
    x = 486,727,790,632.44/665,054.60
  6. Step 6: Final answer
    x = 731,861.40

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Double scale
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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.