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Finding the Fourth Proportional to 589,518.72, 813,490.56 and 331,381.44

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Solution

The fourth proportional to 589,518.72, 813,490.56 and 331,381.44 is: 457,280.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,518.72 : 813,490.56 = 331,381.44 : x
  2. Step 2: Convert to fraction form
    589,518.72/813,490.56 = 331,381.44/x
  3. Step 3: Cross multiply
    589,518.72x = 813,490.56 × 331,381.44
  4. Step 4: Simplify right side
    589,518.72x = 269,575,673,199.21
  5. Step 5: Solve for x
    x = 269,575,673,199.21/589,518.72
  6. Step 6: Final answer
    x = 457,280.94

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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.