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Finding the Fourth Proportional to 530,775.60, 796,163.40 and 425,799.60

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Solution

The fourth proportional to 530,775.60, 796,163.40 and 425,799.60 is: 638,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,775.60 : 796,163.40 = 425,799.60 : x
  2. Step 2: Convert to fraction form
    530,775.60/796,163.40 = 425,799.60/x
  3. Step 3: Cross multiply
    530,775.60x = 796,163.40 × 425,799.60
  4. Step 4: Simplify right side
    530,775.60x = 339,006,057,254.64
  5. Step 5: Solve for x
    x = 339,006,057,254.64/530,775.60
  6. Step 6: Final answer
    x = 638,699.40

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Half scale
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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.