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Finding the Fourth Proportional to 609,684.85, 841,213.09 and 351,640.72

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Solution

The fourth proportional to 609,684.85, 841,213.09 and 351,640.72 is: 485,176.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,684.85 : 841,213.09 = 351,640.72 : x
  2. Step 2: Convert to fraction form
    609,684.85/841,213.09 = 351,640.72/x
  3. Step 3: Cross multiply
    609,684.85x = 841,213.09 × 351,640.72
  4. Step 4: Simplify right side
    609,684.85x = 295,804,775,417.09
  5. Step 5: Solve for x
    x = 295,804,775,417.09/609,684.85
  6. Step 6: Final answer
    x = 485,176.52

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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.