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Finding the Fourth Proportional to 531,346.60, 797,019.90 and 478,858.60

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Solution

The fourth proportional to 531,346.60, 797,019.90 and 478,858.60 is: 718,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,346.60 : 797,019.90 = 478,858.60 : x
  2. Step 2: Convert to fraction form
    531,346.60/797,019.90 = 478,858.60/x
  3. Step 3: Cross multiply
    531,346.60x = 797,019.90 × 478,858.60
  4. Step 4: Simplify right side
    531,346.60x = 381,659,833,486.14
  5. Step 5: Solve for x
    x = 381,659,833,486.14/531,346.60
  6. Step 6: Final answer
    x = 718,287.90

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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.