Home / 496,985.15-685,821.50-303,716.21

Finding the Fourth Proportional to 496,985.15, 685,821.50 and 303,716.21

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Solution

The fourth proportional to 496,985.15, 685,821.50 and 303,716.21 is: 419,117.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,985.15 : 685,821.50 = 303,716.21 : x
  2. Step 2: Convert to fraction form
    496,985.15/685,821.50 = 303,716.21/x
  3. Step 3: Cross multiply
    496,985.15x = 685,821.50 × 303,716.21
  4. Step 4: Simplify right side
    496,985.15x = 208,295,101,768.83
  5. Step 5: Solve for x
    x = 208,295,101,768.83/496,985.15
  6. Step 6: Final answer
    x = 419,117.36

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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.