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Finding the Fourth Proportional to 559,499.20, 772,109.01 and 304,850.39

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Solution

The fourth proportional to 559,499.20, 772,109.01 and 304,850.39 is: 420,693.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,499.20 : 772,109.01 = 304,850.39 : x
  2. Step 2: Convert to fraction form
    559,499.20/772,109.01 = 304,850.39/x
  3. Step 3: Cross multiply
    559,499.20x = 772,109.01 × 304,850.39
  4. Step 4: Simplify right side
    559,499.20x = 235,377,728,960.47
  5. Step 5: Solve for x
    x = 235,377,728,960.47/559,499.20
  6. Step 6: Final answer
    x = 420,693.60

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.