Home / 1,386,830.71-2,080,905.81-961,021.81

Finding the Fourth Proportional to 1,386,830.71, 2,080,905.81 and 961,021.81

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Solution

The fourth proportional to 1,386,830.71, 2,080,905.81 and 961,021.81 is: 1,441,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,830.71 : 2,080,905.81 = 961,021.81 : x
  2. Step 2: Convert to fraction form
    1,386,830.71/2,080,905.81 = 961,021.81/x
  3. Step 3: Cross multiply
    1,386,830.71x = 2,080,905.81 × 961,021.81
  4. Step 4: Simplify right side
    1,386,830.71x = 1,999,795,867,965.72
  5. Step 5: Solve for x
    x = 1,999,795,867,965.72/1,386,830.71
  6. Step 6: Final answer
    x = 1,441,989.89

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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.