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Finding the Fourth Proportional to 638,289.90, 957,780.45 and 283,358.70

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Solution

The fourth proportional to 638,289.90, 957,780.45 and 283,358.70 is: 425,191.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,289.90 : 957,780.45 = 283,358.70 : x
  2. Step 2: Convert to fraction form
    638,289.90/957,780.45 = 283,358.70/x
  3. Step 3: Cross multiply
    638,289.90x = 957,780.45 × 283,358.70
  4. Step 4: Simplify right side
    638,289.90x = 271,395,423,197.42
  5. Step 5: Solve for x
    x = 271,395,423,197.42/638,289.90
  6. Step 6: Final answer
    x = 425,191.47

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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.