Home / 1,218,680.40-1,681,758.32-674,804.48

Finding the Fourth Proportional to 1,218,680.40, 1,681,758.32 and 674,804.48

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Solution

The fourth proportional to 1,218,680.40, 1,681,758.32 and 674,804.48 is: 931,218.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,680.40 : 1,681,758.32 = 674,804.48 : x
  2. Step 2: Convert to fraction form
    1,218,680.40/1,681,758.32 = 674,804.48/x
  3. Step 3: Cross multiply
    1,218,680.40x = 1,681,758.32 × 674,804.48
  4. Step 4: Simplify right side
    1,218,680.40x = 1,134,858,048,613.27
  5. Step 5: Solve for x
    x = 1,134,858,048,613.27/1,218,680.40
  6. Step 6: Final answer
    x = 931,218.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.