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Finding the Fourth Proportional to 550,000.40, 825,000.60 and 425,584.40

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Solution

The fourth proportional to 550,000.40, 825,000.60 and 425,584.40 is: 638,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,000.40 : 825,000.60 = 425,584.40 : x
  2. Step 2: Convert to fraction form
    550,000.40/825,000.60 = 425,584.40/x
  3. Step 3: Cross multiply
    550,000.40x = 825,000.60 × 425,584.40
  4. Step 4: Simplify right side
    550,000.40x = 351,107,385,350.64
  5. Step 5: Solve for x
    x = 351,107,385,350.64/550,000.40
  6. Step 6: Final answer
    x = 638,376.60

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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.