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Finding the Fourth Proportional to 571,844.60, 789,130.32 and 330,119

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Solution

The fourth proportional to 571,844.60, 789,130.32 and 330,119 is: 455,555.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,844.60 : 789,130.32 = 330,119 : x
  2. Step 2: Convert to fraction form
    571,844.60/789,130.32 = 330,119/x
  3. Step 3: Cross multiply
    571,844.60x = 789,130.32 × 330,119
  4. Step 4: Simplify right side
    571,844.60x = 260,506,912,108.08
  5. Step 5: Solve for x
    x = 260,506,912,108.08/571,844.60
  6. Step 6: Final answer
    x = 455,555.43

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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.