Home / 1,211,079.20-1,816,609.69-312,444.55

Finding the Fourth Proportional to 1,211,079.20, 1,816,609.69 and 312,444.55

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Solution

The fourth proportional to 1,211,079.20, 1,816,609.69 and 312,444.55 is: 468,664.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,079.20 : 1,816,609.69 = 312,444.55 : x
  2. Step 2: Convert to fraction form
    1,211,079.20/1,816,609.69 = 312,444.55/x
  3. Step 3: Cross multiply
    1,211,079.20x = 1,816,609.69 × 312,444.55
  4. Step 4: Simplify right side
    1,211,079.20x = 567,589,791,795.05
  5. Step 5: Solve for x
    x = 567,589,791,795.05/1,211,079.20
  6. Step 6: Final answer
    x = 468,664.47

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1.5x scale

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.