Home / 858,028.49-1,287,381.72-325,690.82

Finding the Fourth Proportional to 858,028.49, 1,287,381.72 and 325,690.82

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Solution

The fourth proportional to 858,028.49, 1,287,381.72 and 325,690.82 is: 488,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,028.49 : 1,287,381.72 = 325,690.82 : x
  2. Step 2: Convert to fraction form
    858,028.49/1,287,381.72 = 325,690.82/x
  3. Step 3: Cross multiply
    858,028.49x = 1,287,381.72 × 325,690.82
  4. Step 4: Simplify right side
    858,028.49x = 419,288,401,602.90
  5. Step 5: Solve for x
    x = 419,288,401,602.90/858,028.49
  6. Step 6: Final answer
    x = 488,664.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.