Home / 1,389,698.57-2,084,907.25-813,808.20

Finding the Fourth Proportional to 1,389,698.57, 2,084,907.25 and 813,808.20

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Solution

The fourth proportional to 1,389,698.57, 2,084,907.25 and 813,808.20 is: 1,220,922.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,698.57 : 2,084,907.25 = 813,808.20 : x
  2. Step 2: Convert to fraction form
    1,389,698.57/2,084,907.25 = 813,808.20/x
  3. Step 3: Cross multiply
    1,389,698.57x = 2,084,907.25 × 813,808.20
  4. Step 4: Simplify right side
    1,389,698.57x = 1,696,714,608,819.84
  5. Step 5: Solve for x
    x = 1,696,714,608,819.84/1,389,698.57
  6. Step 6: Final answer
    x = 1,220,922.76

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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.