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Finding the Fourth Proportional to 571,959.61, 789,374.26 and 330,241.78

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Solution

The fourth proportional to 571,959.61, 789,374.26 and 330,241.78 is: 455,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,959.61 : 789,374.26 = 330,241.78 : x
  2. Step 2: Convert to fraction form
    571,959.61/789,374.26 = 330,241.78/x
  3. Step 3: Cross multiply
    571,959.61x = 789,374.26 × 330,241.78
  4. Step 4: Simplify right side
    571,959.61x = 260,684,360,708.58
  5. Step 5: Solve for x
    x = 260,684,360,708.58/571,959.61
  6. Step 6: Final answer
    x = 455,774.07

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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.