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Finding the Fourth Proportional to 647,819.70, 970,417.35 and 367,008.90

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Solution

The fourth proportional to 647,819.70, 970,417.35 and 367,008.90 is: 549,769.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,819.70 : 970,417.35 = 367,008.90 : x
  2. Step 2: Convert to fraction form
    647,819.70/970,417.35 = 367,008.90/x
  3. Step 3: Cross multiply
    647,819.70x = 970,417.35 × 367,008.90
  4. Step 4: Simplify right side
    647,819.70x = 356,151,804,164.42
  5. Step 5: Solve for x
    x = 356,151,804,164.42/647,819.70
  6. Step 6: Final answer
    x = 549,769.95

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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.