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Finding the Fourth Proportional to 500,554.89, 690,782.99 and 274,200.39

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Solution

The fourth proportional to 500,554.89, 690,782.99 and 274,200.39 is: 378,405.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,554.89 : 690,782.99 = 274,200.39 : x
  2. Step 2: Convert to fraction form
    500,554.89/690,782.99 = 274,200.39/x
  3. Step 3: Cross multiply
    500,554.89x = 690,782.99 × 274,200.39
  4. Step 4: Simplify right side
    500,554.89x = 189,412,963,892.36
  5. Step 5: Solve for x
    x = 189,412,963,892.36/500,554.89
  6. Step 6: Final answer
    x = 378,405.98

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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.