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Finding the Fourth Proportional to 508,289.28, 701,436.96 and 290,494.32

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Solution

The fourth proportional to 508,289.28, 701,436.96 and 290,494.32 is: 400,880.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,289.28 : 701,436.96 = 290,494.32 : x
  2. Step 2: Convert to fraction form
    508,289.28/701,436.96 = 290,494.32/x
  3. Step 3: Cross multiply
    508,289.28x = 701,436.96 × 290,494.32
  4. Step 4: Simplify right side
    508,289.28x = 203,763,452,718.07
  5. Step 5: Solve for x
    x = 203,763,452,718.07/508,289.28
  6. Step 6: Final answer
    x = 400,880.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.