Home / 830,376.40-1,245,499.80-324,839.20

Finding the Fourth Proportional to 830,376.40, 1,245,499.80 and 324,839.20

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Solution

The fourth proportional to 830,376.40, 1,245,499.80 and 324,839.20 is: 487,233.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,376.40 : 1,245,499.80 = 324,839.20 : x
  2. Step 2: Convert to fraction form
    830,376.40/1,245,499.80 = 324,839.20/x
  3. Step 3: Cross multiply
    830,376.40x = 1,245,499.80 × 324,839.20
  4. Step 4: Simplify right side
    830,376.40x = 404,587,158,632.16
  5. Step 5: Solve for x
    x = 404,587,158,632.16/830,376.40
  6. Step 6: Final answer
    x = 487,233.45

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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.