Home / 1,428,623.55-2,143,144.47-670,542.03

Finding the Fourth Proportional to 1,428,623.55, 2,143,144.47 and 670,542.03

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Solution

The fourth proportional to 1,428,623.55, 2,143,144.47 and 670,542.03 is: 1,005,911.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,623.55 : 2,143,144.47 = 670,542.03 : x
  2. Step 2: Convert to fraction form
    1,428,623.55/2,143,144.47 = 670,542.03/x
  3. Step 3: Cross multiply
    1,428,623.55x = 2,143,144.47 × 670,542.03
  4. Step 4: Simplify right side
    1,428,623.55x = 1,437,068,443,497.07
  5. Step 5: Solve for x
    x = 1,437,068,443,497.07/1,428,623.55
  6. Step 6: Final answer
    x = 1,005,911.21

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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.