Home / 500,020.88-690,040.63-285,156.33

Finding the Fourth Proportional to 500,020.88, 690,040.63 and 285,156.33

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Solution

The fourth proportional to 500,020.88, 690,040.63 and 285,156.33 is: 393,522.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,020.88 : 690,040.63 = 285,156.33 : x
  2. Step 2: Convert to fraction form
    500,020.88/690,040.63 = 285,156.33/x
  3. Step 3: Cross multiply
    500,020.88x = 690,040.63 × 285,156.33
  4. Step 4: Simplify right side
    500,020.88x = 196,769,452,888.80
  5. Step 5: Solve for x
    x = 196,769,452,888.80/500,020.88
  6. Step 6: Final answer
    x = 393,522.47

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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.