Home / 5,181,979.81-7,773,966-1,986,856.78

Finding the Fourth Proportional to 5,181,979.81, 7,773,966 and 1,986,856.78

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Solution

The fourth proportional to 5,181,979.81, 7,773,966 and 1,986,856.78 is: 2,980,667.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181,979.81 : 7,773,966 = 1,986,856.78 : x
  2. Step 2: Convert to fraction form
    5,181,979.81/7,773,966 = 1,986,856.78/x
  3. Step 3: Cross multiply
    5,181,979.81x = 7,773,966 × 1,986,856.78
  4. Step 4: Simplify right side
    5,181,979.81x = 15,445,757,054,589.48
  5. Step 5: Solve for x
    x = 15,445,757,054,589.48/5,181,979.81
  6. Step 6: Final answer
    x = 2,980,667.16

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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.