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Finding the Fourth Proportional to 620,028.51, 855,592.02 and 348,043.88

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Solution

The fourth proportional to 620,028.51, 855,592.02 and 348,043.88 is: 480,273.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,028.51 : 855,592.02 = 348,043.88 : x
  2. Step 2: Convert to fraction form
    620,028.51/855,592.02 = 348,043.88/x
  3. Step 3: Cross multiply
    620,028.51x = 855,592.02 × 348,043.88
  4. Step 4: Simplify right side
    620,028.51x = 297,783,562,059.88
  5. Step 5: Solve for x
    x = 297,783,562,059.88/620,028.51
  6. Step 6: Final answer
    x = 480,273.98

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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.