Home / 1,291,901.60-1,782,800.16-718,936.40

Finding the Fourth Proportional to 1,291,901.60, 1,782,800.16 and 718,936.40

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Solution

The fourth proportional to 1,291,901.60, 1,782,800.16 and 718,936.40 is: 992,118.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,901.60 : 1,782,800.16 = 718,936.40 : x
  2. Step 2: Convert to fraction form
    1,291,901.60/1,782,800.16 = 718,936.40/x
  3. Step 3: Cross multiply
    1,291,901.60x = 1,782,800.16 × 718,936.40
  4. Step 4: Simplify right side
    1,291,901.60x = 1,281,719,928,949.82
  5. Step 5: Solve for x
    x = 1,281,719,928,949.82/1,291,901.60
  6. Step 6: Final answer
    x = 992,118.85

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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.