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Finding the Fourth Proportional to 503,813.93, 695,326.78 and 288,949.38

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Solution

The fourth proportional to 503,813.93, 695,326.78 and 288,949.38 is: 398,786.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,813.93 : 695,326.78 = 288,949.38 : x
  2. Step 2: Convert to fraction form
    503,813.93/695,326.78 = 288,949.38/x
  3. Step 3: Cross multiply
    503,813.93x = 695,326.78 × 288,949.38
  4. Step 4: Simplify right side
    503,813.93x = 200,914,239,732.11
  5. Step 5: Solve for x
    x = 200,914,239,732.11/503,813.93
  6. Step 6: Final answer
    x = 398,786.60

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1.5x scale

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.