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Finding the Fourth Proportional to 674,522.50, 930,853.21 and 368,611.77

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Solution

The fourth proportional to 674,522.50, 930,853.21 and 368,611.77 is: 508,690.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,522.50 : 930,853.21 = 368,611.77 : x
  2. Step 2: Convert to fraction form
    674,522.50/930,853.21 = 368,611.77/x
  3. Step 3: Cross multiply
    674,522.50x = 930,853.21 × 368,611.77
  4. Step 4: Simplify right side
    674,522.50x = 343,123,449,348.28
  5. Step 5: Solve for x
    x = 343,123,449,348.28/674,522.50
  6. Step 6: Final answer
    x = 508,690.89

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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.