Home / 509,943.70-764,915.55-210,324.70

Finding the Fourth Proportional to 509,943.70, 764,915.55 and 210,324.70

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Solution

The fourth proportional to 509,943.70, 764,915.55 and 210,324.70 is: 315,487.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,943.70 : 764,915.55 = 210,324.70 : x
  2. Step 2: Convert to fraction form
    509,943.70/764,915.55 = 210,324.70/x
  3. Step 3: Cross multiply
    509,943.70x = 764,915.55 × 210,324.70
  4. Step 4: Simplify right side
    509,943.70x = 160,880,633,579.09
  5. Step 5: Solve for x
    x = 160,880,633,579.09/509,943.70
  6. Step 6: Final answer
    x = 315,487.05

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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.