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Finding the Fourth Proportional to 639,659.32, 959,182.26 and 302,418.52

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Solution

The fourth proportional to 639,659.32, 959,182.26 and 302,418.52 is: 453,482.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,659.32 : 959,182.26 = 302,418.52 : x
  2. Step 2: Convert to fraction form
    639,659.32/959,182.26 = 302,418.52/x
  3. Step 3: Cross multiply
    639,659.32x = 959,182.26 × 302,418.52
  4. Step 4: Simplify right side
    639,659.32x = 290,074,479,479.46
  5. Step 5: Solve for x
    x = 290,074,479,479.46/639,659.32
  6. Step 6: Final answer
    x = 453,482.77

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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.