Home / 1,388,403.40-2,080,272.30-676,899.40

Finding the Fourth Proportional to 1,388,403.40, 2,080,272.30 and 676,899.40

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Solution

The fourth proportional to 1,388,403.40, 2,080,272.30 and 676,899.40 is: 1,014,211.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,403.40 : 2,080,272.30 = 676,899.40 : x
  2. Step 2: Convert to fraction form
    1,388,403.40/2,080,272.30 = 676,899.40/x
  3. Step 3: Cross multiply
    1,388,403.40x = 2,080,272.30 × 676,899.40
  4. Step 4: Simplify right side
    1,388,403.40x = 1,408,135,071,706.62
  5. Step 5: Solve for x
    x = 1,408,135,071,706.62/1,388,403.40
  6. Step 6: Final answer
    x = 1,014,211.77

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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.