Home / 1,209,967.74-1,810,391.40-721,844.74

Finding the Fourth Proportional to 1,209,967.74, 1,810,391.40 and 721,844.74

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Solution

The fourth proportional to 1,209,967.74, 1,810,391.40 and 721,844.74 is: 1,080,046.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,967.74 : 1,810,391.40 = 721,844.74 : x
  2. Step 2: Convert to fraction form
    1,209,967.74/1,810,391.40 = 721,844.74/x
  3. Step 3: Cross multiply
    1,209,967.74x = 1,810,391.40 × 721,844.74
  4. Step 4: Simplify right side
    1,209,967.74x = 1,306,821,509,431.24
  5. Step 5: Solve for x
    x = 1,306,821,509,431.24/1,209,967.74
  6. Step 6: Final answer
    x = 1,080,046.57

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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.