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Finding the Fourth Proportional to 1,409,405.93, 1,944,980.18 and 764,826.12

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Solution

The fourth proportional to 1,409,405.93, 1,944,980.18 and 764,826.12 is: 1,055,460.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,405.93 : 1,944,980.18 = 764,826.12 : x
  2. Step 2: Convert to fraction form
    1,409,405.93/1,944,980.18 = 764,826.12/x
  3. Step 3: Cross multiply
    1,409,405.93x = 1,944,980.18 × 764,826.12
  4. Step 4: Simplify right side
    1,409,405.93x = 1,487,571,640,722.17
  5. Step 5: Solve for x
    x = 1,487,571,640,722.17/1,409,405.93
  6. Step 6: Final answer
    x = 1,055,460.04

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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.