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Finding the Fourth Proportional to 522,266.60, 720,663.41 and 318,243.17

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Solution

The fourth proportional to 522,266.60, 720,663.41 and 318,243.17 is: 439,136.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,266.60 : 720,663.41 = 318,243.17 : x
  2. Step 2: Convert to fraction form
    522,266.60/720,663.41 = 318,243.17/x
  3. Step 3: Cross multiply
    522,266.60x = 720,663.41 × 318,243.17
  4. Step 4: Simplify right side
    522,266.60x = 229,346,206,510.19
  5. Step 5: Solve for x
    x = 229,346,206,510.19/522,266.60
  6. Step 6: Final answer
    x = 439,136.27

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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.