Home / 1,667,021.16-2,300,441.58-978,681.72

Finding the Fourth Proportional to 1,667,021.16, 2,300,441.58 and 978,681.72

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Solution

The fourth proportional to 1,667,021.16, 2,300,441.58 and 978,681.72 is: 1,350,552.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,667,021.16 : 2,300,441.58 = 978,681.72 : x
  2. Step 2: Convert to fraction form
    1,667,021.16/2,300,441.58 = 978,681.72/x
  3. Step 3: Cross multiply
    1,667,021.16x = 2,300,441.58 × 978,681.72
  4. Step 4: Simplify right side
    1,667,021.16x = 2,251,400,122,273.92
  5. Step 5: Solve for x
    x = 2,251,400,122,273.92/1,667,021.16
  6. Step 6: Final answer
    x = 1,350,552.82

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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.