Home / 1,399,785.52-1,931,704.48-819,120.28

Finding the Fourth Proportional to 1,399,785.52, 1,931,704.48 and 819,120.28

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Solution

The fourth proportional to 1,399,785.52, 1,931,704.48 and 819,120.28 is: 1,130,386.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,785.52 : 1,931,704.48 = 819,120.28 : x
  2. Step 2: Convert to fraction form
    1,399,785.52/1,931,704.48 = 819,120.28/x
  3. Step 3: Cross multiply
    1,399,785.52x = 1,931,704.48 × 819,120.28
  4. Step 4: Simplify right side
    1,399,785.52x = 1,582,298,314,534.85
  5. Step 5: Solve for x
    x = 1,582,298,314,534.85/1,399,785.52
  6. Step 6: Final answer
    x = 1,130,386.26

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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.