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Finding the Fourth Proportional to 658,015.47, 987,336.96 and 358,489.44

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Solution

The fourth proportional to 658,015.47, 987,336.96 and 358,489.44 is: 537,905.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,015.47 : 987,336.96 = 358,489.44 : x
  2. Step 2: Convert to fraction form
    658,015.47/987,336.96 = 358,489.44/x
  3. Step 3: Cross multiply
    658,015.47x = 987,336.96 × 358,489.44
  4. Step 4: Simplify right side
    658,015.47x = 353,949,873,881.70
  5. Step 5: Solve for x
    x = 353,949,873,881.70/658,015.47
  6. Step 6: Final answer
    x = 537,905.09

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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.