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Finding the Fourth Proportional to 637,555.90, 879,825.73 and 347,162.95

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Solution

The fourth proportional to 637,555.90, 879,825.73 and 347,162.95 is: 479,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,555.90 : 879,825.73 = 347,162.95 : x
  2. Step 2: Convert to fraction form
    637,555.90/879,825.73 = 347,162.95/x
  3. Step 3: Cross multiply
    637,555.90x = 879,825.73 × 347,162.95
  4. Step 4: Simplify right side
    637,555.90x = 305,442,895,912.70
  5. Step 5: Solve for x
    x = 305,442,895,912.70/637,555.90
  6. Step 6: Final answer
    x = 479,084.10

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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.