Home / 830,151.20-1,245,615.60-431,242.40

Finding the Fourth Proportional to 830,151.20, 1,245,615.60 and 431,242.40

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Solution

The fourth proportional to 830,151.20, 1,245,615.60 and 431,242.40 is: 647,065.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,151.20 : 1,245,615.60 = 431,242.40 : x
  2. Step 2: Convert to fraction form
    830,151.20/1,245,615.60 = 431,242.40/x
  3. Step 3: Cross multiply
    830,151.20x = 1,245,615.60 × 431,242.40
  4. Step 4: Simplify right side
    830,151.20x = 537,162,260,821.44
  5. Step 5: Solve for x
    x = 537,162,260,821.44/830,151.20
  6. Step 6: Final answer
    x = 647,065.57

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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.