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Finding the Fourth Proportional to 500,085.88, 749,371.10 and 331,000.45

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Solution

The fourth proportional to 500,085.88, 749,371.10 and 331,000.45 is: 495,999.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,085.88 : 749,371.10 = 331,000.45 : x
  2. Step 2: Convert to fraction form
    500,085.88/749,371.10 = 331,000.45/x
  3. Step 3: Cross multiply
    500,085.88x = 749,371.10 × 331,000.45
  4. Step 4: Simplify right side
    500,085.88x = 248,042,169,896.17
  5. Step 5: Solve for x
    x = 248,042,169,896.17/500,085.88
  6. Step 6: Final answer
    x = 495,999.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.