Home / 1,129,126.71-1,558,154.54-639,085.71

Finding the Fourth Proportional to 1,129,126.71, 1,558,154.54 and 639,085.71

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Solution

The fourth proportional to 1,129,126.71, 1,558,154.54 and 639,085.71 is: 881,915.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,126.71 : 1,558,154.54 = 639,085.71 : x
  2. Step 2: Convert to fraction form
    1,129,126.71/1,558,154.54 = 639,085.71/x
  3. Step 3: Cross multiply
    1,129,126.71x = 1,558,154.54 × 639,085.71
  4. Step 4: Simplify right side
    1,129,126.71x = 995,794,300,485.62
  5. Step 5: Solve for x
    x = 995,794,300,485.62/1,129,126.71
  6. Step 6: Final answer
    x = 881,915.46

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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.