Home / 1,257,984.88-1,885,402.12-990,689.76

Finding the Fourth Proportional to 1,257,984.88, 1,885,402.12 and 990,689.76

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Solution

The fourth proportional to 1,257,984.88, 1,885,402.12 and 990,689.76 is: 1,484,794.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,984.88 : 1,885,402.12 = 990,689.76 : x
  2. Step 2: Convert to fraction form
    1,257,984.88/1,885,402.12 = 990,689.76/x
  3. Step 3: Cross multiply
    1,257,984.88x = 1,885,402.12 × 990,689.76
  4. Step 4: Simplify right side
    1,257,984.88x = 1,867,848,573,766.29
  5. Step 5: Solve for x
    x = 1,867,848,573,766.29/1,257,984.88
  6. Step 6: Final answer
    x = 1,484,794.14

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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.