Home / 1,428,047.51-2,141,021.50-680,618.39

Finding the Fourth Proportional to 1,428,047.51, 2,141,021.50 and 680,618.39

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Solution

The fourth proportional to 1,428,047.51, 2,141,021.50 and 680,618.39 is: 1,020,427.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,047.51 : 2,141,021.50 = 680,618.39 : x
  2. Step 2: Convert to fraction form
    1,428,047.51/2,141,021.50 = 680,618.39/x
  3. Step 3: Cross multiply
    1,428,047.51x = 2,141,021.50 × 680,618.39
  4. Step 4: Simplify right side
    1,428,047.51x = 1,457,218,593,878.73
  5. Step 5: Solve for x
    x = 1,457,218,593,878.73/1,428,047.51
  6. Step 6: Final answer
    x = 1,020,427.25

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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.