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Finding the Fourth Proportional to 490,432.32, 734,715.36 and 279,430.56

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Solution

The fourth proportional to 490,432.32, 734,715.36 and 279,430.56 is: 418,614.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,432.32 : 734,715.36 = 279,430.56 : x
  2. Step 2: Convert to fraction form
    490,432.32/734,715.36 = 279,430.56/x
  3. Step 3: Cross multiply
    490,432.32x = 734,715.36 × 279,430.56
  4. Step 4: Simplify right side
    490,432.32x = 205,301,924,485.40
  5. Step 5: Solve for x
    x = 205,301,924,485.40/490,432.32
  6. Step 6: Final answer
    x = 418,614.18

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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.