Home / 1,325,186.64-1,987,967.88-426,419.58

Finding the Fourth Proportional to 1,325,186.64, 1,987,967.88 and 426,419.58

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Solution

The fourth proportional to 1,325,186.64, 1,987,967.88 and 426,419.58 is: 639,689.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,186.64 : 1,987,967.88 = 426,419.58 : x
  2. Step 2: Convert to fraction form
    1,325,186.64/1,987,967.88 = 426,419.58/x
  3. Step 3: Cross multiply
    1,325,186.64x = 1,987,967.88 × 426,419.58
  4. Step 4: Simplify right side
    1,325,186.64x = 847,708,428,443.09
  5. Step 5: Solve for x
    x = 847,708,428,443.09/1,325,186.64
  6. Step 6: Final answer
    x = 639,689.84

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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.