Home / 1,211,309.60-1,816,964.40-1,120,071.20

Finding the Fourth Proportional to 1,211,309.60, 1,816,964.40 and 1,120,071.20

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Solution

The fourth proportional to 1,211,309.60, 1,816,964.40 and 1,120,071.20 is: 1,680,106.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,309.60 : 1,816,964.40 = 1,120,071.20 : x
  2. Step 2: Convert to fraction form
    1,211,309.60/1,816,964.40 = 1,120,071.20/x
  3. Step 3: Cross multiply
    1,211,309.60x = 1,816,964.40 × 1,120,071.20
  4. Step 4: Simplify right side
    1,211,309.60x = 2,035,129,495,865.28
  5. Step 5: Solve for x
    x = 2,035,129,495,865.28/1,211,309.60
  6. Step 6: Final answer
    x = 1,680,106.80

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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.