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Finding the Fourth Proportional to 413,802.60, 620,703.90 and 330,858.60

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Solution

The fourth proportional to 413,802.60, 620,703.90 and 330,858.60 is: 496,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,802.60 : 620,703.90 = 330,858.60 : x
  2. Step 2: Convert to fraction form
    413,802.60/620,703.90 = 330,858.60/x
  3. Step 3: Cross multiply
    413,802.60x = 620,703.90 × 330,858.60
  4. Step 4: Simplify right side
    413,802.60x = 205,365,223,368.54
  5. Step 5: Solve for x
    x = 205,365,223,368.54/413,802.60
  6. Step 6: Final answer
    x = 496,287.90

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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.