Home / 970,668.32-1,339,127.70-644,135.33

Finding the Fourth Proportional to 970,668.32, 1,339,127.70 and 644,135.33

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Solution

The fourth proportional to 970,668.32, 1,339,127.70 and 644,135.33 is: 888,644.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,668.32 : 1,339,127.70 = 644,135.33 : x
  2. Step 2: Convert to fraction form
    970,668.32/1,339,127.70 = 644,135.33/x
  3. Step 3: Cross multiply
    970,668.32x = 1,339,127.70 × 644,135.33
  4. Step 4: Simplify right side
    970,668.32x = 862,579,462,951.64
  5. Step 5: Solve for x
    x = 862,579,462,951.64/970,668.32
  6. Step 6: Final answer
    x = 888,644.91

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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.