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Finding the Fourth Proportional to 907,765.80, 1,362,960.90 and 684,691.80

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Solution

The fourth proportional to 907,765.80, 1,362,960.90 and 684,691.80 is: 1,028,027.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,765.80 : 1,362,960.90 = 684,691.80 : x
  2. Step 2: Convert to fraction form
    907,765.80/1,362,960.90 = 684,691.80/x
  3. Step 3: Cross multiply
    907,765.80x = 1,362,960.90 × 684,691.80
  4. Step 4: Simplify right side
    907,765.80x = 933,208,151,950.62
  5. Step 5: Solve for x
    x = 933,208,151,950.62/907,765.80
  6. Step 6: Final answer
    x = 1,028,027.44

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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.