Home / 778,570.97-1,074,428.03-439,039.31

Finding the Fourth Proportional to 778,570.97, 1,074,428.03 and 439,039.31

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Solution

The fourth proportional to 778,570.97, 1,074,428.03 and 439,039.31 is: 605,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,570.97 : 1,074,428.03 = 439,039.31 : x
  2. Step 2: Convert to fraction form
    778,570.97/1,074,428.03 = 439,039.31/x
  3. Step 3: Cross multiply
    778,570.97x = 1,074,428.03 × 439,039.31
  4. Step 4: Simplify right side
    778,570.97x = 471,716,136,661.32
  5. Step 5: Solve for x
    x = 471,716,136,661.32/778,570.97
  6. Step 6: Final answer
    x = 605,874.30

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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.