Home / 1,120,242.10-1,678,358.40-681,262.60

Finding the Fourth Proportional to 1,120,242.10, 1,678,358.40 and 681,262.60

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Solution

The fourth proportional to 1,120,242.10, 1,678,358.40 and 681,262.60 is: 1,020,674.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,242.10 : 1,678,358.40 = 681,262.60 : x
  2. Step 2: Convert to fraction form
    1,120,242.10/1,678,358.40 = 681,262.60/x
  3. Step 3: Cross multiply
    1,120,242.10x = 1,678,358.40 × 681,262.60
  4. Step 4: Simplify right side
    1,120,242.10x = 1,143,402,807,315.84
  5. Step 5: Solve for x
    x = 1,143,402,807,315.84/1,120,242.10
  6. Step 6: Final answer
    x = 1,020,674.73

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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.