Home / 970,980.57-1,339,327.83-644,286.51

Finding the Fourth Proportional to 970,980.57, 1,339,327.83 and 644,286.51

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Solution

The fourth proportional to 970,980.57, 1,339,327.83 and 644,286.51 is: 888,700.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,980.57 : 1,339,327.83 = 644,286.51 : x
  2. Step 2: Convert to fraction form
    970,980.57/1,339,327.83 = 644,286.51/x
  3. Step 3: Cross multiply
    970,980.57x = 1,339,327.83 × 644,286.51
  4. Step 4: Simplify right side
    970,980.57x = 862,910,853,336.57
  5. Step 5: Solve for x
    x = 862,910,853,336.57/970,980.57
  6. Step 6: Final answer
    x = 888,700.43

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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.