Home / 830,395.80-1,245,402.54-324,968.76

Finding the Fourth Proportional to 830,395.80, 1,245,402.54 and 324,968.76

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Solution

The fourth proportional to 830,395.80, 1,245,402.54 and 324,968.76 is: 487,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,395.80 : 1,245,402.54 = 324,968.76 : x
  2. Step 2: Convert to fraction form
    830,395.80/1,245,402.54 = 324,968.76/x
  3. Step 3: Cross multiply
    830,395.80x = 1,245,402.54 × 324,968.76
  4. Step 4: Simplify right side
    830,395.80x = 404,716,919,124.65
  5. Step 5: Solve for x
    x = 404,716,919,124.65/830,395.80
  6. Step 6: Final answer
    x = 487,378.33

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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.