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Finding the Fourth Proportional to 571,958.61, 789,372.88 and 330,240.78

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Solution

The fourth proportional to 571,958.61, 789,372.88 and 330,240.78 is: 455,772.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,958.61 : 789,372.88 = 330,240.78 : x
  2. Step 2: Convert to fraction form
    571,958.61/789,372.88 = 330,240.78/x
  3. Step 3: Cross multiply
    571,958.61x = 789,372.88 × 330,240.78
  4. Step 4: Simplify right side
    571,958.61x = 260,683,113,054.70
  5. Step 5: Solve for x
    x = 260,683,113,054.70/571,958.61
  6. Step 6: Final answer
    x = 455,772.69

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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.