Home / 830,402.40-1,245,538.80-324,865.20

Finding the Fourth Proportional to 830,402.40, 1,245,538.80 and 324,865.20

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Solution

The fourth proportional to 830,402.40, 1,245,538.80 and 324,865.20 is: 487,272.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,402.40 : 1,245,538.80 = 324,865.20 : x
  2. Step 2: Convert to fraction form
    830,402.40/1,245,538.80 = 324,865.20/x
  3. Step 3: Cross multiply
    830,402.40x = 1,245,538.80 × 324,865.20
  4. Step 4: Simplify right side
    830,402.40x = 404,632,211,369.76
  5. Step 5: Solve for x
    x = 404,632,211,369.76/830,402.40
  6. Step 6: Final answer
    x = 487,272.45

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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.