Home / 1,098,975.80-1,648,463.70-780,111.20

Finding the Fourth Proportional to 1,098,975.80, 1,648,463.70 and 780,111.20

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Solution

The fourth proportional to 1,098,975.80, 1,648,463.70 and 780,111.20 is: 1,170,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,975.80 : 1,648,463.70 = 780,111.20 : x
  2. Step 2: Convert to fraction form
    1,098,975.80/1,648,463.70 = 780,111.20/x
  3. Step 3: Cross multiply
    1,098,975.80x = 1,648,463.70 × 780,111.20
  4. Step 4: Simplify right side
    1,098,975.80x = 1,285,984,995,163.44
  5. Step 5: Solve for x
    x = 1,285,984,995,163.44/1,098,975.80
  6. Step 6: Final answer
    x = 1,170,166.80

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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.