Home / 1,320,009.46-1,821,613.79-716,397.46

Finding the Fourth Proportional to 1,320,009.46, 1,821,613.79 and 716,397.46

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Solution

The fourth proportional to 1,320,009.46, 1,821,613.79 and 716,397.46 is: 988,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,009.46 : 1,821,613.79 = 716,397.46 : x
  2. Step 2: Convert to fraction form
    1,320,009.46/1,821,613.79 = 716,397.46/x
  3. Step 3: Cross multiply
    1,320,009.46x = 1,821,613.79 × 716,397.46
  4. Step 4: Simplify right side
    1,320,009.46x = 1,304,999,489,493.93
  5. Step 5: Solve for x
    x = 1,304,999,489,493.93/1,320,009.46
  6. Step 6: Final answer
    x = 988,628.89

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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.