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Finding the Fourth Proportional to 500,084.69, 690,109.88 and 285,228.27

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Solution

The fourth proportional to 500,084.69, 690,109.88 and 285,228.27 is: 393,611.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,084.69 : 690,109.88 = 285,228.27 : x
  2. Step 2: Convert to fraction form
    500,084.69/690,109.88 = 285,228.27/x
  3. Step 3: Cross multiply
    500,084.69x = 690,109.88 × 285,228.27
  4. Step 4: Simplify right side
    500,084.69x = 196,838,845,756.17
  5. Step 5: Solve for x
    x = 196,838,845,756.17/500,084.69
  6. Step 6: Final answer
    x = 393,611.03

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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.