Home / 520,542.03-718,318.20-287,955.09

Finding the Fourth Proportional to 520,542.03, 718,318.20 and 287,955.09

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Solution

The fourth proportional to 520,542.03, 718,318.20 and 287,955.09 is: 397,361.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,542.03 : 718,318.20 = 287,955.09 : x
  2. Step 2: Convert to fraction form
    520,542.03/718,318.20 = 287,955.09/x
  3. Step 3: Cross multiply
    520,542.03x = 718,318.20 × 287,955.09
  4. Step 4: Simplify right side
    520,542.03x = 206,843,381,929.64
  5. Step 5: Solve for x
    x = 206,843,381,929.64/520,542.03
  6. Step 6: Final answer
    x = 397,361.54

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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.