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Finding the Fourth Proportional to 722,396.78, 996,915.03 and 435,861.50

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Solution

The fourth proportional to 722,396.78, 996,915.03 and 435,861.50 is: 601,493.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,396.78 : 996,915.03 = 435,861.50 : x
  2. Step 2: Convert to fraction form
    722,396.78/996,915.03 = 435,861.50/x
  3. Step 3: Cross multiply
    722,396.78x = 996,915.03 × 435,861.50
  4. Step 4: Simplify right side
    722,396.78x = 434,516,880,348.35
  5. Step 5: Solve for x
    x = 434,516,880,348.35/722,396.78
  6. Step 6: Final answer
    x = 601,493.38

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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.