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Finding the Fourth Proportional to 628,179.90, 942,374.95 and 493,238.53

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Solution

The fourth proportional to 628,179.90, 942,374.95 and 493,238.53 is: 739,940.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,179.90 : 942,374.95 = 493,238.53 : x
  2. Step 2: Convert to fraction form
    628,179.90/942,374.95 = 493,238.53/x
  3. Step 3: Cross multiply
    628,179.90x = 942,374.95 × 493,238.53
  4. Step 4: Simplify right side
    628,179.90x = 464,815,637,766.16
  5. Step 5: Solve for x
    x = 464,815,637,766.16/628,179.90
  6. Step 6: Final answer
    x = 739,940.32

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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.