Home / 1,189,263.20-1,640,098.14-781,201.40

Finding the Fourth Proportional to 1,189,263.20, 1,640,098.14 and 781,201.40

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Solution

The fourth proportional to 1,189,263.20, 1,640,098.14 and 781,201.40 is: 1,077,345.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,263.20 : 1,640,098.14 = 781,201.40 : x
  2. Step 2: Convert to fraction form
    1,189,263.20/1,640,098.14 = 781,201.40/x
  3. Step 3: Cross multiply
    1,189,263.20x = 1,640,098.14 × 781,201.40
  4. Step 4: Simplify right side
    1,189,263.20x = 1,281,246,963,105.40
  5. Step 5: Solve for x
    x = 1,281,246,963,105.40/1,189,263.20
  6. Step 6: Final answer
    x = 1,077,345.17

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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.