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Finding the Fourth Proportional to 647,814.70, 970,409.85 and 367,003.90

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Solution

The fourth proportional to 647,814.70, 970,409.85 and 367,003.90 is: 549,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,814.70 : 970,409.85 = 367,003.90 : x
  2. Step 2: Convert to fraction form
    647,814.70/970,409.85 = 367,003.90/x
  3. Step 3: Cross multiply
    647,814.70x = 970,409.85 × 367,003.90
  4. Step 4: Simplify right side
    647,814.70x = 356,144,199,548.42
  5. Step 5: Solve for x
    x = 356,144,199,548.42/647,814.70
  6. Step 6: Final answer
    x = 549,762.45

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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.