Home / 1,210,205.80-1,815,308.70-812,074.60

Finding the Fourth Proportional to 1,210,205.80, 1,815,308.70 and 812,074.60

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Solution

The fourth proportional to 1,210,205.80, 1,815,308.70 and 812,074.60 is: 1,218,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,205.80 : 1,815,308.70 = 812,074.60 : x
  2. Step 2: Convert to fraction form
    1,210,205.80/1,815,308.70 = 812,074.60/x
  3. Step 3: Cross multiply
    1,210,205.80x = 1,815,308.70 × 812,074.60
  4. Step 4: Simplify right side
    1,210,205.80x = 1,474,166,086,429.02
  5. Step 5: Solve for x
    x = 1,474,166,086,429.02/1,210,205.80
  6. Step 6: Final answer
    x = 1,218,111.90

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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.