Home / 768,621.40-1,149,821.70-675,309.40

Finding the Fourth Proportional to 768,621.40, 1,149,821.70 and 675,309.40

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Solution

The fourth proportional to 768,621.40, 1,149,821.70 and 675,309.40 is: 1,010,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,621.40 : 1,149,821.70 = 675,309.40 : x
  2. Step 2: Convert to fraction form
    768,621.40/1,149,821.70 = 675,309.40/x
  3. Step 3: Cross multiply
    768,621.40x = 1,149,821.70 × 675,309.40
  4. Step 4: Simplify right side
    768,621.40x = 776,485,402,333.98
  5. Step 5: Solve for x
    x = 776,485,402,333.98/768,621.40
  6. Step 6: Final answer
    x = 1,010,231.31

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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.