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Finding the Fourth Proportional to 571,841.60, 789,126.18 and 330,116

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Solution

The fourth proportional to 571,841.60, 789,126.18 and 330,116 is: 455,551.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,841.60 : 789,126.18 = 330,116 : x
  2. Step 2: Convert to fraction form
    571,841.60/789,126.18 = 330,116/x
  3. Step 3: Cross multiply
    571,841.60x = 789,126.18 × 330,116
  4. Step 4: Simplify right side
    571,841.60x = 260,503,178,036.88
  5. Step 5: Solve for x
    x = 260,503,178,036.88/571,841.60
  6. Step 6: Final answer
    x = 455,551.29

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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.