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Finding the Fourth Proportional to 639,399.04, 959,526.08 and 265,422.08

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Solution

The fourth proportional to 639,399.04, 959,526.08 and 265,422.08 is: 398,310.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,399.04 : 959,526.08 = 265,422.08 : x
  2. Step 2: Convert to fraction form
    639,399.04/959,526.08 = 265,422.08/x
  3. Step 3: Cross multiply
    639,399.04x = 959,526.08 × 265,422.08
  4. Step 4: Simplify right side
    639,399.04x = 254,679,407,967.85
  5. Step 5: Solve for x
    x = 254,679,407,967.85/639,399.04
  6. Step 6: Final answer
    x = 398,310.59

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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.