Home / 1,618,708.80-2,429,618.40-820,891.20

Finding the Fourth Proportional to 1,618,708.80, 2,429,618.40 and 820,891.20

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Solution

The fourth proportional to 1,618,708.80, 2,429,618.40 and 820,891.20 is: 1,232,125.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618,708.80 : 2,429,618.40 = 820,891.20 : x
  2. Step 2: Convert to fraction form
    1,618,708.80/2,429,618.40 = 820,891.20/x
  3. Step 3: Cross multiply
    1,618,708.80x = 2,429,618.40 × 820,891.20
  4. Step 4: Simplify right side
    1,618,708.80x = 1,994,452,363,918.08
  5. Step 5: Solve for x
    x = 1,994,452,363,918.08/1,618,708.80
  6. Step 6: Final answer
    x = 1,232,125.48

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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.