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Finding the Fourth Proportional to 488,817.38, 674,566.38 and 284,988.98

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Solution

The fourth proportional to 488,817.38, 674,566.38 and 284,988.98 is: 393,283.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,817.38 : 674,566.38 = 284,988.98 : x
  2. Step 2: Convert to fraction form
    488,817.38/674,566.38 = 284,988.98/x
  3. Step 3: Cross multiply
    488,817.38x = 674,566.38 × 284,988.98
  4. Step 4: Simplify right side
    488,817.38x = 192,243,984,578.49
  5. Step 5: Solve for x
    x = 192,243,984,578.49/488,817.38
  6. Step 6: Final answer
    x = 393,283.86

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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.