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Finding the Fourth Proportional to 1,319,987.04, 1,821,581.64 and 716,375.04

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Solution

The fourth proportional to 1,319,987.04, 1,821,581.64 and 716,375.04 is: 988,597.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,987.04 : 1,821,581.64 = 716,375.04 : x
  2. Step 2: Convert to fraction form
    1,319,987.04/1,821,581.64 = 716,375.04/x
  3. Step 3: Cross multiply
    1,319,987.04x = 1,821,581.64 × 716,375.04
  4. Step 4: Simplify right side
    1,319,987.04x = 1,304,935,620,218.27
  5. Step 5: Solve for x
    x = 1,304,935,620,218.27/1,319,987.04
  6. Step 6: Final answer
    x = 988,597.30

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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.