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Finding the Fourth Proportional to 500,660.16, 690,885.36 and 274,300.80

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Solution

The fourth proportional to 500,660.16, 690,885.36 and 274,300.80 is: 378,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,660.16 : 690,885.36 = 274,300.80 : x
  2. Step 2: Convert to fraction form
    500,660.16/690,885.36 = 274,300.80/x
  3. Step 3: Cross multiply
    500,660.16x = 690,885.36 × 274,300.80
  4. Step 4: Simplify right side
    500,660.16x = 189,510,406,956.29
  5. Step 5: Solve for x
    x = 189,510,406,956.29/500,660.16
  6. Step 6: Final answer
    x = 378,521.05

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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.