Home / 1,290,276.56-1,780,585.32-717,325.52

Finding the Fourth Proportional to 1,290,276.56, 1,780,585.32 and 717,325.52

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Solution

The fourth proportional to 1,290,276.56, 1,780,585.32 and 717,325.52 is: 989,911.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,276.56 : 1,780,585.32 = 717,325.52 : x
  2. Step 2: Convert to fraction form
    1,290,276.56/1,780,585.32 = 717,325.52/x
  3. Step 3: Cross multiply
    1,290,276.56x = 1,780,585.32 × 717,325.52
  4. Step 4: Simplify right side
    1,290,276.56x = 1,277,259,290,573.37
  5. Step 5: Solve for x
    x = 1,277,259,290,573.37/1,290,276.56
  6. Step 6: Final answer
    x = 989,911.26

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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.