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Finding the Fourth Proportional to 637,611.75, 879,905.43 and 351,158.49

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Solution

The fourth proportional to 637,611.75, 879,905.43 and 351,158.49 is: 484,599.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,611.75 : 879,905.43 = 351,158.49 : x
  2. Step 2: Convert to fraction form
    637,611.75/879,905.43 = 351,158.49/x
  3. Step 3: Cross multiply
    637,611.75x = 879,905.43 × 351,158.49
  4. Step 4: Simplify right side
    637,611.75x = 308,986,262,141.60
  5. Step 5: Solve for x
    x = 308,986,262,141.60/637,611.75
  6. Step 6: Final answer
    x = 484,599.39

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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.