Home / 830,169.70-1,245,643.35-431,260.90

Finding the Fourth Proportional to 830,169.70, 1,245,643.35 and 431,260.90

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Solution

The fourth proportional to 830,169.70, 1,245,643.35 and 431,260.90 is: 647,093.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,169.70 : 1,245,643.35 = 431,260.90 : x
  2. Step 2: Convert to fraction form
    830,169.70/1,245,643.35 = 431,260.90/x
  3. Step 3: Cross multiply
    830,169.70x = 1,245,643.35 × 431,260.90
  4. Step 4: Simplify right side
    830,169.70x = 537,197,272,200.02
  5. Step 5: Solve for x
    x = 537,197,272,200.02/830,169.70
  6. Step 6: Final answer
    x = 647,093.33

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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.