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Finding the Fourth Proportional to 627,985.60, 941,978.40 and 603,491.20

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Solution

The fourth proportional to 627,985.60, 941,978.40 and 603,491.20 is: 905,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,985.60 : 941,978.40 = 603,491.20 : x
  2. Step 2: Convert to fraction form
    627,985.60/941,978.40 = 603,491.20/x
  3. Step 3: Cross multiply
    627,985.60x = 941,978.40 × 603,491.20
  4. Step 4: Simplify right side
    627,985.60x = 568,475,674,990.08
  5. Step 5: Solve for x
    x = 568,475,674,990.08/627,985.60
  6. Step 6: Final answer
    x = 905,236.80

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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.