Home / 1,212,803.80-1,819,205.70-764,031.40

Finding the Fourth Proportional to 1,212,803.80, 1,819,205.70 and 764,031.40

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Solution

The fourth proportional to 1,212,803.80, 1,819,205.70 and 764,031.40 is: 1,146,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,803.80 : 1,819,205.70 = 764,031.40 : x
  2. Step 2: Convert to fraction form
    1,212,803.80/1,819,205.70 = 764,031.40/x
  3. Step 3: Cross multiply
    1,212,803.80x = 1,819,205.70 × 764,031.40
  4. Step 4: Simplify right side
    1,212,803.80x = 1,389,930,277,858.98
  5. Step 5: Solve for x
    x = 1,389,930,277,858.98/1,212,803.80
  6. Step 6: Final answer
    x = 1,146,047.10

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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.