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Finding the Fourth Proportional to 639,286.90, 958,266.15 and 260,044.90

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Solution

The fourth proportional to 639,286.90, 958,266.15 and 260,044.90 is: 389,797.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,286.90 : 958,266.15 = 260,044.90 : x
  2. Step 2: Convert to fraction form
    639,286.90/958,266.15 = 260,044.90/x
  3. Step 3: Cross multiply
    639,286.90x = 958,266.15 × 260,044.90
  4. Step 4: Simplify right side
    639,286.90x = 249,192,225,150.14
  5. Step 5: Solve for x
    x = 249,192,225,150.14/639,286.90
  6. Step 6: Final answer
    x = 389,797.17

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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.