Home / 690,340.32-1,035,912.96-290,956.32

Finding the Fourth Proportional to 690,340.32, 1,035,912.96 and 290,956.32

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Solution

The fourth proportional to 690,340.32, 1,035,912.96 and 290,956.32 is: 436,604.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,340.32 : 1,035,912.96 = 290,956.32 : x
  2. Step 2: Convert to fraction form
    690,340.32/1,035,912.96 = 290,956.32/x
  3. Step 3: Cross multiply
    690,340.32x = 1,035,912.96 × 290,956.32
  4. Step 4: Simplify right side
    690,340.32x = 301,405,422,681.91
  5. Step 5: Solve for x
    x = 301,405,422,681.91/690,340.32
  6. Step 6: Final answer
    x = 436,604.11

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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.