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Finding the Fourth Proportional to 802,213.60, 1,203,028.80 and 402,721.60

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Solution

The fourth proportional to 802,213.60, 1,203,028.80 and 402,721.60 is: 603,936.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,213.60 : 1,203,028.80 = 402,721.60 : x
  2. Step 2: Convert to fraction form
    802,213.60/1,203,028.80 = 402,721.60/x
  3. Step 3: Cross multiply
    802,213.60x = 1,203,028.80 × 402,721.60
  4. Step 4: Simplify right side
    802,213.60x = 484,485,683,182.08
  5. Step 5: Solve for x
    x = 484,485,683,182.08/802,213.60
  6. Step 6: Final answer
    x = 603,936.01

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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.