Home / 1,213,673.80-1,820,510.70-764,901.40

Finding the Fourth Proportional to 1,213,673.80, 1,820,510.70 and 764,901.40

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Solution

The fourth proportional to 1,213,673.80, 1,820,510.70 and 764,901.40 is: 1,147,352.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,673.80 : 1,820,510.70 = 764,901.40 : x
  2. Step 2: Convert to fraction form
    1,213,673.80/1,820,510.70 = 764,901.40/x
  3. Step 3: Cross multiply
    1,213,673.80x = 1,820,510.70 × 764,901.40
  4. Step 4: Simplify right side
    1,213,673.80x = 1,392,511,183,144.98
  5. Step 5: Solve for x
    x = 1,392,511,183,144.98/1,213,673.80
  6. Step 6: Final answer
    x = 1,147,352.10

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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.