Home / 1,210,250.80-1,815,376.20-679,409.20

Finding the Fourth Proportional to 1,210,250.80, 1,815,376.20 and 679,409.20

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Solution

The fourth proportional to 1,210,250.80, 1,815,376.20 and 679,409.20 is: 1,019,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,250.80 : 1,815,376.20 = 679,409.20 : x
  2. Step 2: Convert to fraction form
    1,210,250.80/1,815,376.20 = 679,409.20/x
  3. Step 3: Cross multiply
    1,210,250.80x = 1,815,376.20 × 679,409.20
  4. Step 4: Simplify right side
    1,210,250.80x = 1,233,383,291,741.04
  5. Step 5: Solve for x
    x = 1,233,383,291,741.04/1,210,250.80
  6. Step 6: Final answer
    x = 1,019,113.80

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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.