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Finding the Fourth Proportional to 637,655.76, 879,964.56 and 351,174.96

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Solution

The fourth proportional to 637,655.76, 879,964.56 and 351,174.96 is: 484,621.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,655.76 : 879,964.56 = 351,174.96 : x
  2. Step 2: Convert to fraction form
    637,655.76/879,964.56 = 351,174.96/x
  3. Step 3: Cross multiply
    637,655.76x = 879,964.56 × 351,174.96
  4. Step 4: Simplify right side
    637,655.76x = 309,021,519,159.42
  5. Step 5: Solve for x
    x = 309,021,519,159.42/637,655.76
  6. Step 6: Final answer
    x = 484,621.23

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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.