Home / 505,569.20-697,690.28-287,767.24

Finding the Fourth Proportional to 505,569.20, 697,690.28 and 287,767.24

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Solution

The fourth proportional to 505,569.20, 697,690.28 and 287,767.24 is: 397,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,569.20 : 697,690.28 = 287,767.24 : x
  2. Step 2: Convert to fraction form
    505,569.20/697,690.28 = 287,767.24/x
  3. Step 3: Cross multiply
    505,569.20x = 697,690.28 × 287,767.24
  4. Step 4: Simplify right side
    505,569.20x = 200,772,406,250.43
  5. Step 5: Solve for x
    x = 200,772,406,250.43/505,569.20
  6. Step 6: Final answer
    x = 397,121.51

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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.