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Finding the Fourth Proportional to 500,572.92, 690,807.84 and 274,218.36

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Solution

The fourth proportional to 500,572.92, 690,807.84 and 274,218.36 is: 378,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,572.92 : 690,807.84 = 274,218.36 : x
  2. Step 2: Convert to fraction form
    500,572.92/690,807.84 = 274,218.36/x
  3. Step 3: Cross multiply
    500,572.92x = 690,807.84 × 274,218.36
  4. Step 4: Simplify right side
    500,572.92x = 189,432,192,959.94
  5. Step 5: Solve for x
    x = 189,432,192,959.94/500,572.92
  6. Step 6: Final answer
    x = 378,430.76

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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.