Home / 509,946.20-764,919.30-210,327.20

Finding the Fourth Proportional to 509,946.20, 764,919.30 and 210,327.20

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Solution

The fourth proportional to 509,946.20, 764,919.30 and 210,327.20 is: 315,490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,946.20 : 764,919.30 = 210,327.20 : x
  2. Step 2: Convert to fraction form
    509,946.20/764,919.30 = 210,327.20/x
  3. Step 3: Cross multiply
    509,946.20x = 764,919.30 × 210,327.20
  4. Step 4: Simplify right side
    509,946.20x = 160,883,334,594.96
  5. Step 5: Solve for x
    x = 160,883,334,594.96/509,946.20
  6. Step 6: Final answer
    x = 315,490.80

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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.