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Finding the Fourth Proportional to 530,760.60, 796,140.90 and 425,784.60

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Solution

The fourth proportional to 530,760.60, 796,140.90 and 425,784.60 is: 638,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,760.60 : 796,140.90 = 425,784.60 : x
  2. Step 2: Convert to fraction form
    530,760.60/796,140.90 = 425,784.60/x
  3. Step 3: Cross multiply
    530,760.60x = 796,140.90 × 425,784.60
  4. Step 4: Simplify right side
    530,760.60x = 338,984,534,650.14
  5. Step 5: Solve for x
    x = 338,984,534,650.14/530,760.60
  6. Step 6: Final answer
    x = 638,676.90

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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.