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Finding the Fourth Proportional to 565,136.20, 849,086.70 and 425,168.20

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Solution

The fourth proportional to 565,136.20, 849,086.70 and 425,168.20 is: 638,792.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,136.20 : 849,086.70 = 425,168.20 : x
  2. Step 2: Convert to fraction form
    565,136.20/849,086.70 = 425,168.20/x
  3. Step 3: Cross multiply
    565,136.20x = 849,086.70 × 425,168.20
  4. Step 4: Simplify right side
    565,136.20x = 361,004,663,882.94
  5. Step 5: Solve for x
    x = 361,004,663,882.94/565,136.20
  6. Step 6: Final answer
    x = 638,792.32

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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.