Home / 1,392,420.51-2,088,659.93-445,788.49

Finding the Fourth Proportional to 1,392,420.51, 2,088,659.93 and 445,788.49

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Solution

The fourth proportional to 1,392,420.51, 2,088,659.93 and 445,788.49 is: 668,692.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,420.51 : 2,088,659.93 = 445,788.49 : x
  2. Step 2: Convert to fraction form
    1,392,420.51/2,088,659.93 = 445,788.49/x
  3. Step 3: Cross multiply
    1,392,420.51x = 2,088,659.93 × 445,788.49
  4. Step 4: Simplify right side
    1,392,420.51x = 931,100,561,921.74
  5. Step 5: Solve for x
    x = 931,100,561,921.74/1,392,420.51
  6. Step 6: Final answer
    x = 668,692.08

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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.