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Finding the Fourth Proportional to 637,659.80, 879,959.80 and 351,206.56

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Solution

The fourth proportional to 637,659.80, 879,959.80 and 351,206.56 is: 484,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,659.80 : 879,959.80 = 351,206.56 : x
  2. Step 2: Convert to fraction form
    637,659.80/879,959.80 = 351,206.56/x
  3. Step 3: Cross multiply
    637,659.80x = 879,959.80 × 351,206.56
  4. Step 4: Simplify right side
    637,659.80x = 309,047,654,296.29
  5. Step 5: Solve for x
    x = 309,047,654,296.29/637,659.80
  6. Step 6: Final answer
    x = 484,659.15

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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.