Home / 1,210,112.20-1,811,231.70-942,423.40

Finding the Fourth Proportional to 1,210,112.20, 1,811,231.70 and 942,423.40

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Solution

The fourth proportional to 1,210,112.20, 1,811,231.70 and 942,423.40 is: 1,410,569.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,112.20 : 1,811,231.70 = 942,423.40 : x
  2. Step 2: Convert to fraction form
    1,210,112.20/1,811,231.70 = 942,423.40/x
  3. Step 3: Cross multiply
    1,210,112.20x = 1,811,231.70 × 942,423.40
  4. Step 4: Simplify right side
    1,210,112.20x = 1,706,947,136,901.78
  5. Step 5: Solve for x
    x = 1,706,947,136,901.78/1,210,112.20
  6. Step 6: Final answer
    x = 1,410,569.31

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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.