Home / 5,181,980.81-7,773,967.50-1,986,857.78

Finding the Fourth Proportional to 5,181,980.81, 7,773,967.50 and 1,986,857.78

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Solution

The fourth proportional to 5,181,980.81, 7,773,967.50 and 1,986,857.78 is: 2,980,668.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181,980.81 : 7,773,967.50 = 1,986,857.78 : x
  2. Step 2: Convert to fraction form
    5,181,980.81/7,773,967.50 = 1,986,857.78/x
  3. Step 3: Cross multiply
    5,181,980.81x = 7,773,967.50 × 1,986,857.78
  4. Step 4: Simplify right side
    5,181,980.81x = 15,445,767,808,842.15
  5. Step 5: Solve for x
    x = 15,445,767,808,842.15/5,181,980.81
  6. Step 6: Final answer
    x = 2,980,668.66

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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.