Home / 830,403.20-1,245,604.80-531,221.60

Finding the Fourth Proportional to 830,403.20, 1,245,604.80 and 531,221.60

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Solution

The fourth proportional to 830,403.20, 1,245,604.80 and 531,221.60 is: 796,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,403.20 : 1,245,604.80 = 531,221.60 : x
  2. Step 2: Convert to fraction form
    830,403.20/1,245,604.80 = 531,221.60/x
  3. Step 3: Cross multiply
    830,403.20x = 1,245,604.80 × 531,221.60
  4. Step 4: Simplify right side
    830,403.20x = 661,692,174,823.68
  5. Step 5: Solve for x
    x = 661,692,174,823.68/830,403.20
  6. Step 6: Final answer
    x = 796,832.40

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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.