Home / 1,290,172.51-1,780,238.77-746,358.89

Finding the Fourth Proportional to 1,290,172.51, 1,780,238.77 and 746,358.89

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Solution

The fourth proportional to 1,290,172.51, 1,780,238.77 and 746,358.89 is: 1,029,859.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,172.51 : 1,780,238.77 = 746,358.89 : x
  2. Step 2: Convert to fraction form
    1,290,172.51/1,780,238.77 = 746,358.89/x
  3. Step 3: Cross multiply
    1,290,172.51x = 1,780,238.77 × 746,358.89
  4. Step 4: Simplify right side
    1,290,172.51x = 1,328,697,034,896.87
  5. Step 5: Solve for x
    x = 1,328,697,034,896.87/1,290,172.51
  6. Step 6: Final answer
    x = 1,029,859.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.