Home / 1,489,640-2,055,685.92-810,564.80

Finding the Fourth Proportional to 1,489,640, 2,055,685.92 and 810,564.80

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Solution

The fourth proportional to 1,489,640, 2,055,685.92 and 810,564.80 is: 1,118,570.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,640 : 2,055,685.92 = 810,564.80 : x
  2. Step 2: Convert to fraction form
    1,489,640/2,055,685.92 = 810,564.80/x
  3. Step 3: Cross multiply
    1,489,640x = 2,055,685.92 × 810,564.80
  4. Step 4: Simplify right side
    1,489,640x = 1,666,266,646,607.62
  5. Step 5: Solve for x
    x = 1,666,266,646,607.62/1,489,640
  6. Step 6: Final answer
    x = 1,118,570.02

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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.