Home / 1,218,402-1,681,161.36-788,622.48

Finding the Fourth Proportional to 1,218,402, 1,681,161.36 and 788,622.48

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Solution

The fourth proportional to 1,218,402, 1,681,161.36 and 788,622.48 is: 1,088,147.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,402 : 1,681,161.36 = 788,622.48 : x
  2. Step 2: Convert to fraction form
    1,218,402/1,681,161.36 = 788,622.48/x
  3. Step 3: Cross multiply
    1,218,402x = 1,681,161.36 × 788,622.48
  4. Step 4: Simplify right side
    1,218,402x = 1,325,801,641,003.37
  5. Step 5: Solve for x
    x = 1,325,801,641,003.37/1,218,402
  6. Step 6: Final answer
    x = 1,088,147.95

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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.