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Finding the Fourth Proportional to 500,510.79, 690,701.45 and 271,062.80

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Solution

The fourth proportional to 500,510.79, 690,701.45 and 271,062.80 is: 374,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,510.79 : 690,701.45 = 271,062.80 : x
  2. Step 2: Convert to fraction form
    500,510.79/690,701.45 = 271,062.80/x
  3. Step 3: Cross multiply
    500,510.79x = 690,701.45 × 271,062.80
  4. Step 4: Simplify right side
    500,510.79x = 187,223,469,001.06
  5. Step 5: Solve for x
    x = 187,223,469,001.06/500,510.79
  6. Step 6: Final answer
    x = 374,064.80

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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.