Home / 690,378.06-1,035,708.30-291,018.90

Finding the Fourth Proportional to 690,378.06, 1,035,708.30 and 291,018.90

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Solution

The fourth proportional to 690,378.06, 1,035,708.30 and 291,018.90 is: 436,587.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,378.06 : 1,035,708.30 = 291,018.90 : x
  2. Step 2: Convert to fraction form
    690,378.06/1,035,708.30 = 291,018.90/x
  3. Step 3: Cross multiply
    690,378.06x = 1,035,708.30 × 291,018.90
  4. Step 4: Simplify right side
    690,378.06x = 301,410,690,186.87
  5. Step 5: Solve for x
    x = 301,410,690,186.87/690,378.06
  6. Step 6: Final answer
    x = 436,587.88

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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.