Home / 1,378,963.85-1,898,638.47-1,171,795.28

Finding the Fourth Proportional to 1,378,963.85, 1,898,638.47 and 1,171,795.28

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Solution

The fourth proportional to 1,378,963.85, 1,898,638.47 and 1,171,795.28 is: 1,613,396.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,963.85 : 1,898,638.47 = 1,171,795.28 : x
  2. Step 2: Convert to fraction form
    1,378,963.85/1,898,638.47 = 1,171,795.28/x
  3. Step 3: Cross multiply
    1,378,963.85x = 1,898,638.47 × 1,171,795.28
  4. Step 4: Simplify right side
    1,378,963.85x = 2,224,815,602,319.02
  5. Step 5: Solve for x
    x = 2,224,815,602,319.02/1,378,963.85
  6. Step 6: Final answer
    x = 1,613,396.61

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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.