Home / 1,422,859.18-1,963,561.11-778,265.20

Finding the Fourth Proportional to 1,422,859.18, 1,963,561.11 and 778,265.20

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Solution

The fourth proportional to 1,422,859.18, 1,963,561.11 and 778,265.20 is: 1,074,014.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,859.18 : 1,963,561.11 = 778,265.20 : x
  2. Step 2: Convert to fraction form
    1,422,859.18/1,963,561.11 = 778,265.20/x
  3. Step 3: Cross multiply
    1,422,859.18x = 1,963,561.11 × 778,265.20
  4. Step 4: Simplify right side
    1,422,859.18x = 1,528,171,279,986.37
  5. Step 5: Solve for x
    x = 1,528,171,279,986.37/1,422,859.18
  6. Step 6: Final answer
    x = 1,074,014.42

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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.