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Finding the Fourth Proportional to 655,873.61, 905,133.69 and 365,485.57

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Solution

The fourth proportional to 655,873.61, 905,133.69 and 365,485.57 is: 504,385.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,873.61 : 905,133.69 = 365,485.57 : x
  2. Step 2: Convert to fraction form
    655,873.61/905,133.69 = 365,485.57/x
  3. Step 3: Cross multiply
    655,873.61x = 905,133.69 × 365,485.57
  4. Step 4: Simplify right side
    655,873.61x = 330,813,306,080.81
  5. Step 5: Solve for x
    x = 330,813,306,080.81/655,873.61
  6. Step 6: Final answer
    x = 504,385.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.