Home / 1,230,578.40-1,845,694.80-389,215.20

Finding the Fourth Proportional to 1,230,578.40, 1,845,694.80 and 389,215.20

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Solution

The fourth proportional to 1,230,578.40, 1,845,694.80 and 389,215.20 is: 583,768.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,578.40 : 1,845,694.80 = 389,215.20 : x
  2. Step 2: Convert to fraction form
    1,230,578.40/1,845,694.80 = 389,215.20/x
  3. Step 3: Cross multiply
    1,230,578.40x = 1,845,694.80 × 389,215.20
  4. Step 4: Simplify right side
    1,230,578.40x = 718,372,470,720.96
  5. Step 5: Solve for x
    x = 718,372,470,720.96/1,230,578.40
  6. Step 6: Final answer
    x = 583,768.15

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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.