Home / 830,169.20-1,245,642.60-431,260.40

Finding the Fourth Proportional to 830,169.20, 1,245,642.60 and 431,260.40

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Solution

The fourth proportional to 830,169.20, 1,245,642.60 and 431,260.40 is: 647,092.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,169.20 : 1,245,642.60 = 431,260.40 : x
  2. Step 2: Convert to fraction form
    830,169.20/1,245,642.60 = 431,260.40/x
  3. Step 3: Cross multiply
    830,169.20x = 1,245,642.60 × 431,260.40
  4. Step 4: Simplify right side
    830,169.20x = 537,196,325,933.04
  5. Step 5: Solve for x
    x = 537,196,325,933.04/830,169.20
  6. Step 6: Final answer
    x = 647,092.58

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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.