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Finding the Fourth Proportional to 500,509.79, 690,700.07 and 271,061.80

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Solution

The fourth proportional to 500,509.79, 690,700.07 and 271,061.80 is: 374,063.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,509.79 : 690,700.07 = 271,061.80 : x
  2. Step 2: Convert to fraction form
    500,509.79/690,700.07 = 271,061.80/x
  3. Step 3: Cross multiply
    500,509.79x = 690,700.07 × 271,061.80
  4. Step 4: Simplify right side
    500,509.79x = 187,222,403,185.23
  5. Step 5: Solve for x
    x = 187,222,403,185.23/500,509.79
  6. Step 6: Final answer
    x = 374,063.42

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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.