Home / 1,139,106.57-1,707,816.24-689,721.81

Finding the Fourth Proportional to 1,139,106.57, 1,707,816.24 and 689,721.81

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Solution

The fourth proportional to 1,139,106.57, 1,707,816.24 and 689,721.81 is: 1,034,071.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,106.57 : 1,707,816.24 = 689,721.81 : x
  2. Step 2: Convert to fraction form
    1,139,106.57/1,707,816.24 = 689,721.81/x
  3. Step 3: Cross multiply
    1,139,106.57x = 1,707,816.24 × 689,721.81
  4. Step 4: Simplify right side
    1,139,106.57x = 1,177,918,108,200.19
  5. Step 5: Solve for x
    x = 1,177,918,108,200.19/1,139,106.57
  6. Step 6: Final answer
    x = 1,034,071.91

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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.