Home / 780,912.09-1,170,031.33-426,175.22

Finding the Fourth Proportional to 780,912.09, 1,170,031.33 and 426,175.22

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Solution

The fourth proportional to 780,912.09, 1,170,031.33 and 426,175.22 is: 638,533.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,912.09 : 1,170,031.33 = 426,175.22 : x
  2. Step 2: Convert to fraction form
    780,912.09/1,170,031.33 = 426,175.22/x
  3. Step 3: Cross multiply
    780,912.09x = 1,170,031.33 × 426,175.22
  4. Step 4: Simplify right side
    780,912.09x = 498,638,362,927.44
  5. Step 5: Solve for x
    x = 498,638,362,927.44/780,912.09
  6. Step 6: Final answer
    x = 638,533.29

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1.5x scale

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.