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Finding the Fourth Proportional to 508,914.20, 764,124.60 and 284,722.40

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Solution

The fourth proportional to 508,914.20, 764,124.60 and 284,722.40 is: 427,505.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,914.20 : 764,124.60 = 284,722.40 : x
  2. Step 2: Convert to fraction form
    508,914.20/764,124.60 = 284,722.40/x
  3. Step 3: Cross multiply
    508,914.20x = 764,124.60 × 284,722.40
  4. Step 4: Simplify right side
    508,914.20x = 217,563,390,011.04
  5. Step 5: Solve for x
    x = 217,563,390,011.04/508,914.20
  6. Step 6: Final answer
    x = 427,505.05

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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.