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Finding the Fourth Proportional to 496,755.18, 685,427.67 and 315,496.62

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Solution

The fourth proportional to 496,755.18, 685,427.67 and 315,496.62 is: 435,325.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,755.18 : 685,427.67 = 315,496.62 : x
  2. Step 2: Convert to fraction form
    496,755.18/685,427.67 = 315,496.62/x
  3. Step 3: Cross multiply
    496,755.18x = 685,427.67 × 315,496.62
  4. Step 4: Simplify right side
    496,755.18x = 216,250,113,139.48
  5. Step 5: Solve for x
    x = 216,250,113,139.48/496,755.18
  6. Step 6: Final answer
    x = 435,325.33

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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.