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Finding the Fourth Proportional to 574,415.20, 859,744.40 and 422,571.84

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Solution

The fourth proportional to 574,415.20, 859,744.40 and 422,571.84 is: 632,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,415.20 : 859,744.40 = 422,571.84 : x
  2. Step 2: Convert to fraction form
    574,415.20/859,744.40 = 422,571.84/x
  3. Step 3: Cross multiply
    574,415.20x = 859,744.40 × 422,571.84
  4. Step 4: Simplify right side
    574,415.20x = 363,303,773,037.70
  5. Step 5: Solve for x
    x = 363,303,773,037.70/574,415.20
  6. Step 6: Final answer
    x = 632,475.90

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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.