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Finding the Fourth Proportional to 647,575.10, 971,362.65 and 367,639.10

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Solution

The fourth proportional to 647,575.10, 971,362.65 and 367,639.10 is: 551,458.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,575.10 : 971,362.65 = 367,639.10 : x
  2. Step 2: Convert to fraction form
    647,575.10/971,362.65 = 367,639.10/x
  3. Step 3: Cross multiply
    647,575.10x = 971,362.65 × 367,639.10
  4. Step 4: Simplify right side
    647,575.10x = 357,110,890,419.62
  5. Step 5: Solve for x
    x = 357,110,890,419.62/647,575.10
  6. Step 6: Final answer
    x = 551,458.65

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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.