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Finding the Fourth Proportional to 637,656.80, 879,955.66 and 351,203.56

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Solution

The fourth proportional to 637,656.80, 879,955.66 and 351,203.56 is: 484,655.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,656.80 : 879,955.66 = 351,203.56 : x
  2. Step 2: Convert to fraction form
    637,656.80/879,955.66 = 351,203.56/x
  3. Step 3: Cross multiply
    637,656.80x = 879,955.66 × 351,203.56
  4. Step 4: Simplify right side
    637,656.80x = 309,043,560,434.15
  5. Step 5: Solve for x
    x = 309,043,560,434.15/637,656.80
  6. Step 6: Final answer
    x = 484,655.01

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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.