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Finding the Fourth Proportional to 1,620,323.22, 2,235,977.95 and 931,943.10

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Solution

The fourth proportional to 1,620,323.22, 2,235,977.95 and 931,943.10 is: 1,286,042.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,323.22 : 2,235,977.95 = 931,943.10 : x
  2. Step 2: Convert to fraction form
    1,620,323.22/2,235,977.95 = 931,943.10/x
  3. Step 3: Cross multiply
    1,620,323.22x = 2,235,977.95 × 931,943.10
  4. Step 4: Simplify right side
    1,620,323.22x = 2,083,804,222,254.65
  5. Step 5: Solve for x
    x = 2,083,804,222,254.65/1,620,323.22
  6. Step 6: Final answer
    x = 1,286,042.31

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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.