Home / 1,211,270.10-1,816,905.15-1,120,031.70

Finding the Fourth Proportional to 1,211,270.10, 1,816,905.15 and 1,120,031.70

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Solution

The fourth proportional to 1,211,270.10, 1,816,905.15 and 1,120,031.70 is: 1,680,047.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,270.10 : 1,816,905.15 = 1,120,031.70 : x
  2. Step 2: Convert to fraction form
    1,211,270.10/1,816,905.15 = 1,120,031.70/x
  3. Step 3: Cross multiply
    1,211,270.10x = 1,816,905.15 × 1,120,031.70
  4. Step 4: Simplify right side
    1,211,270.10x = 2,034,991,363,893.26
  5. Step 5: Solve for x
    x = 2,034,991,363,893.26/1,211,270.10
  6. Step 6: Final answer
    x = 1,680,047.55

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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.