Home / 1,216,943.80-1,825,415.70-1,209,945.40

Finding the Fourth Proportional to 1,216,943.80, 1,825,415.70 and 1,209,945.40

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Solution

The fourth proportional to 1,216,943.80, 1,825,415.70 and 1,209,945.40 is: 1,814,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,943.80 : 1,825,415.70 = 1,209,945.40 : x
  2. Step 2: Convert to fraction form
    1,216,943.80/1,825,415.70 = 1,209,945.40/x
  3. Step 3: Cross multiply
    1,216,943.80x = 1,825,415.70 × 1,209,945.40
  4. Step 4: Simplify right side
    1,216,943.80x = 2,208,653,329,302.78
  5. Step 5: Solve for x
    x = 2,208,653,329,302.78/1,216,943.80
  6. Step 6: Final answer
    x = 1,814,918.10

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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.