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Finding the Fourth Proportional to 668,859.30, 1,003,617 and 313,902.18

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Solution

The fourth proportional to 668,859.30, 1,003,617 and 313,902.18 is: 471,007.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,859.30 : 1,003,617 = 313,902.18 : x
  2. Step 2: Convert to fraction form
    668,859.30/1,003,617 = 313,902.18/x
  3. Step 3: Cross multiply
    668,859.30x = 1,003,617 × 313,902.18
  4. Step 4: Simplify right side
    668,859.30x = 315,037,564,185.06
  5. Step 5: Solve for x
    x = 315,037,564,185.06/668,859.30
  6. Step 6: Final answer
    x = 471,007.23

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.