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Finding the Fourth Proportional to 637,663.59, 879,245.69 and 476,245.98

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Solution

The fourth proportional to 637,663.59, 879,245.69 and 476,245.98 is: 656,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,663.59 : 879,245.69 = 476,245.98 : x
  2. Step 2: Convert to fraction form
    637,663.59/879,245.69 = 476,245.98/x
  3. Step 3: Cross multiply
    637,663.59x = 879,245.69 × 476,245.98
  4. Step 4: Simplify right side
    637,663.59x = 418,737,222,913.60
  5. Step 5: Solve for x
    x = 418,737,222,913.60/637,663.59
  6. Step 6: Final answer
    x = 656,674.19

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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.