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Finding the Fourth Proportional to 647,818.70, 970,415.85 and 367,007.90

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Solution

The fourth proportional to 647,818.70, 970,415.85 and 367,007.90 is: 549,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,818.70 : 970,415.85 = 367,007.90 : x
  2. Step 2: Convert to fraction form
    647,818.70/970,415.85 = 367,007.90/x
  3. Step 3: Cross multiply
    647,818.70x = 970,415.85 × 367,007.90
  4. Step 4: Simplify right side
    647,818.70x = 356,150,283,235.22
  5. Step 5: Solve for x
    x = 356,150,283,235.22/647,818.70
  6. Step 6: Final answer
    x = 549,768.45

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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.