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Finding the Fourth Proportional to 500,743.08, 691,002.90 and 274,383.72

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Solution

The fourth proportional to 500,743.08, 691,002.90 and 274,383.72 is: 378,637.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,743.08 : 691,002.90 = 274,383.72 : x
  2. Step 2: Convert to fraction form
    500,743.08/691,002.90 = 274,383.72/x
  3. Step 3: Cross multiply
    500,743.08x = 691,002.90 × 274,383.72
  4. Step 4: Simplify right side
    500,743.08x = 189,599,946,232.79
  5. Step 5: Solve for x
    x = 189,599,946,232.79/500,743.08
  6. Step 6: Final answer
    x = 378,637.18

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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.