Home / 1,212,513.15-1,818,769.62-680,075.70

Finding the Fourth Proportional to 1,212,513.15, 1,818,769.62 and 680,075.70

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Solution

The fourth proportional to 1,212,513.15, 1,818,769.62 and 680,075.70 is: 1,020,113.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,513.15 : 1,818,769.62 = 680,075.70 : x
  2. Step 2: Convert to fraction form
    1,212,513.15/1,818,769.62 = 680,075.70/x
  3. Step 3: Cross multiply
    1,212,513.15x = 1,818,769.62 × 680,075.70
  4. Step 4: Simplify right side
    1,212,513.15x = 1,236,901,022,460.23
  5. Step 5: Solve for x
    x = 1,236,901,022,460.23/1,212,513.15
  6. Step 6: Final answer
    x = 1,020,113.49

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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.