Home / 1,378,234.81-1,901,965.60-766,374.43

Finding the Fourth Proportional to 1,378,234.81, 1,901,965.60 and 766,374.43

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Solution

The fourth proportional to 1,378,234.81, 1,901,965.60 and 766,374.43 is: 1,057,597.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,234.81 : 1,901,965.60 = 766,374.43 : x
  2. Step 2: Convert to fraction form
    1,378,234.81/1,901,965.60 = 766,374.43/x
  3. Step 3: Cross multiply
    1,378,234.81x = 1,901,965.60 × 766,374.43
  4. Step 4: Simplify right side
    1,378,234.81x = 1,457,617,794,950.79
  5. Step 5: Solve for x
    x = 1,457,617,794,950.79/1,378,234.81
  6. Step 6: Final answer
    x = 1,057,597.58

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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.