Home / 665,059.40-997,589.10-384,248.60

Finding the Fourth Proportional to 665,059.40, 997,589.10 and 384,248.60

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Solution

The fourth proportional to 665,059.40, 997,589.10 and 384,248.60 is: 576,372.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,059.40 : 997,589.10 = 384,248.60 : x
  2. Step 2: Convert to fraction form
    665,059.40/997,589.10 = 384,248.60/x
  3. Step 3: Cross multiply
    665,059.40x = 997,589.10 × 384,248.60
  4. Step 4: Simplify right side
    665,059.40x = 383,322,215,050.26
  5. Step 5: Solve for x
    x = 383,322,215,050.26/665,059.40
  6. Step 6: Final answer
    x = 576,372.90

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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.