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Finding the Fourth Proportional to 500,395.87, 690,546.56 and 270,953.26

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Solution

The fourth proportional to 500,395.87, 690,546.56 and 270,953.26 is: 373,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,395.87 : 690,546.56 = 270,953.26 : x
  2. Step 2: Convert to fraction form
    500,395.87/690,546.56 = 270,953.26/x
  3. Step 3: Cross multiply
    500,395.87x = 690,546.56 × 270,953.26
  4. Step 4: Simplify right side
    500,395.87x = 187,105,840,259.02
  5. Step 5: Solve for x
    x = 187,105,840,259.02/500,395.87
  6. Step 6: Final answer
    x = 373,915.64

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1.5x scale

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.