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Finding the Fourth Proportional to 522,266.85, 720,663.75 and 318,243.42

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Solution

The fourth proportional to 522,266.85, 720,663.75 and 318,243.42 is: 439,136.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,266.85 : 720,663.75 = 318,243.42 : x
  2. Step 2: Convert to fraction form
    522,266.85/720,663.75 = 318,243.42/x
  3. Step 3: Cross multiply
    522,266.85x = 720,663.75 × 318,243.42
  4. Step 4: Simplify right side
    522,266.85x = 229,346,496,470.03
  5. Step 5: Solve for x
    x = 229,346,496,470.03/522,266.85
  6. Step 6: Final answer
    x = 439,136.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.