Home / 1,392,420.07-2,088,659.27-445,788.06

Finding the Fourth Proportional to 1,392,420.07, 2,088,659.27 and 445,788.06

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Solution

The fourth proportional to 1,392,420.07, 2,088,659.27 and 445,788.06 is: 668,691.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,420.07 : 2,088,659.27 = 445,788.06 : x
  2. Step 2: Convert to fraction form
    1,392,420.07/2,088,659.27 = 445,788.06/x
  3. Step 3: Cross multiply
    1,392,420.07x = 2,088,659.27 × 445,788.06
  4. Step 4: Simplify right side
    1,392,420.07x = 931,099,354,748.76
  5. Step 5: Solve for x
    x = 931,099,354,748.76/1,392,420.07
  6. Step 6: Final answer
    x = 668,691.42

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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.