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Finding the Fourth Proportional to 528,611.70, 791,297.55 and 291,227.70

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Solution

The fourth proportional to 528,611.70, 791,297.55 and 291,227.70 is: 435,949.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,611.70 : 791,297.55 = 291,227.70 : x
  2. Step 2: Convert to fraction form
    528,611.70/791,297.55 = 291,227.70/x
  3. Step 3: Cross multiply
    528,611.70x = 791,297.55 × 291,227.70
  4. Step 4: Simplify right side
    528,611.70x = 230,447,765,502.14
  5. Step 5: Solve for x
    x = 230,447,765,502.14/528,611.70
  6. Step 6: Final answer
    x = 435,949.04

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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.