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Finding the Fourth Proportional to 413,774.60, 620,661.90 and 330,830.60

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Solution

The fourth proportional to 413,774.60, 620,661.90 and 330,830.60 is: 496,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,774.60 : 620,661.90 = 330,830.60 : x
  2. Step 2: Convert to fraction form
    413,774.60/620,661.90 = 330,830.60/x
  3. Step 3: Cross multiply
    413,774.60x = 620,661.90 × 330,830.60
  4. Step 4: Simplify right side
    413,774.60x = 205,333,948,774.14
  5. Step 5: Solve for x
    x = 205,333,948,774.14/413,774.60
  6. Step 6: Final answer
    x = 496,245.90

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1.5x scale

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.