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Finding the Fourth Proportional to 550,266.90, 824,416.20 and 339,658.80

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Solution

The fourth proportional to 550,266.90, 824,416.20 and 339,658.80 is: 508,880.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,266.90 : 824,416.20 = 339,658.80 : x
  2. Step 2: Convert to fraction form
    550,266.90/824,416.20 = 339,658.80/x
  3. Step 3: Cross multiply
    550,266.90x = 824,416.20 × 339,658.80
  4. Step 4: Simplify right side
    550,266.90x = 280,020,217,192.56
  5. Step 5: Solve for x
    x = 280,020,217,192.56/550,266.90
  6. Step 6: Final answer
    x = 508,880.72

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1.5x scale

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.