Home / 1,290,370.54-1,780,199.86-746,405.32

Finding the Fourth Proportional to 1,290,370.54, 1,780,199.86 and 746,405.32

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Solution

The fourth proportional to 1,290,370.54, 1,780,199.86 and 746,405.32 is: 1,029,743.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,370.54 : 1,780,199.86 = 746,405.32 : x
  2. Step 2: Convert to fraction form
    1,290,370.54/1,780,199.86 = 746,405.32/x
  3. Step 3: Cross multiply
    1,290,370.54x = 1,780,199.86 × 746,405.32
  4. Step 4: Simplify right side
    1,290,370.54x = 1,328,750,646,167.26
  5. Step 5: Solve for x
    x = 1,328,750,646,167.26/1,290,370.54
  6. Step 6: Final answer
    x = 1,029,743.48

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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.