Home / 589,257.72-813,175.74-320,985.72

Finding the Fourth Proportional to 589,257.72, 813,175.74 and 320,985.72

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Solution

The fourth proportional to 589,257.72, 813,175.74 and 320,985.72 is: 442,960.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,257.72 : 813,175.74 = 320,985.72 : x
  2. Step 2: Convert to fraction form
    589,257.72/813,175.74 = 320,985.72/x
  3. Step 3: Cross multiply
    589,257.72x = 813,175.74 × 320,985.72
  4. Step 4: Simplify right side
    589,257.72x = 261,017,800,390.43
  5. Step 5: Solve for x
    x = 261,017,800,390.43/589,257.72
  6. Step 6: Final answer
    x = 442,960.34

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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.