Home / 1,222,182.84-1,686,586.95-678,287.01

Finding the Fourth Proportional to 1,222,182.84, 1,686,586.95 and 678,287.01

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Solution

The fourth proportional to 1,222,182.84, 1,686,586.95 and 678,287.01 is: 936,021.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,182.84 : 1,686,586.95 = 678,287.01 : x
  2. Step 2: Convert to fraction form
    1,222,182.84/1,686,586.95 = 678,287.01/x
  3. Step 3: Cross multiply
    1,222,182.84x = 1,686,586.95 × 678,287.01
  4. Step 4: Simplify right side
    1,222,182.84x = 1,143,990,019,420.52
  5. Step 5: Solve for x
    x = 1,143,990,019,420.52/1,222,182.84
  6. Step 6: Final answer
    x = 936,021.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.