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Finding the Fourth Proportional to 647,811.70, 970,405.35 and 367,000.90

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Solution

The fourth proportional to 647,811.70, 970,405.35 and 367,000.90 is: 549,757.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,811.70 : 970,405.35 = 367,000.90 : x
  2. Step 2: Convert to fraction form
    647,811.70/970,405.35 = 367,000.90/x
  3. Step 3: Cross multiply
    647,811.70x = 970,405.35 × 367,000.90
  4. Step 4: Simplify right side
    647,811.70x = 356,139,636,814.82
  5. Step 5: Solve for x
    x = 356,139,636,814.82/647,811.70
  6. Step 6: Final answer
    x = 549,757.96

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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.