Home / 1,210,441.20-1,815,661.80-1,152,380.40

Finding the Fourth Proportional to 1,210,441.20, 1,815,661.80 and 1,152,380.40

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Solution

The fourth proportional to 1,210,441.20, 1,815,661.80 and 1,152,380.40 is: 1,728,570.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,441.20 : 1,815,661.80 = 1,152,380.40 : x
  2. Step 2: Convert to fraction form
    1,210,441.20/1,815,661.80 = 1,152,380.40/x
  3. Step 3: Cross multiply
    1,210,441.20x = 1,815,661.80 × 1,152,380.40
  4. Step 4: Simplify right side
    1,210,441.20x = 2,092,333,071,348.72
  5. Step 5: Solve for x
    x = 2,092,333,071,348.72/1,210,441.20
  6. Step 6: Final answer
    x = 1,728,570.60

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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.