Home / 1,210,104.20-1,811,219.70-942,415.40

Finding the Fourth Proportional to 1,210,104.20, 1,811,219.70 and 942,415.40

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Solution

The fourth proportional to 1,210,104.20, 1,811,219.70 and 942,415.40 is: 1,410,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,104.20 : 1,811,219.70 = 942,415.40 : x
  2. Step 2: Convert to fraction form
    1,210,104.20/1,811,219.70 = 942,415.40/x
  3. Step 3: Cross multiply
    1,210,104.20x = 1,811,219.70 × 942,415.40
  4. Step 4: Simplify right side
    1,210,104.20x = 1,706,921,338,063.38
  5. Step 5: Solve for x
    x = 1,706,921,338,063.38/1,210,104.20
  6. Step 6: Final answer
    x = 1,410,557.32

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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.