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Finding the Fourth Proportional to 620,055.73, 855,610.62 and 348,153.50

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Solution

The fourth proportional to 620,055.73, 855,610.62 and 348,153.50 is: 480,414.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,055.73 : 855,610.62 = 348,153.50 : x
  2. Step 2: Convert to fraction form
    620,055.73/855,610.62 = 348,153.50/x
  3. Step 3: Cross multiply
    620,055.73x = 855,610.62 × 348,153.50
  4. Step 4: Simplify right side
    620,055.73x = 297,883,831,990.17
  5. Step 5: Solve for x
    x = 297,883,831,990.17/620,055.73
  6. Step 6: Final answer
    x = 480,414.61

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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.