Home / 1,189,438.08-1,641,429.48-645,574.65

Finding the Fourth Proportional to 1,189,438.08, 1,641,429.48 and 645,574.65

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Solution

The fourth proportional to 1,189,438.08, 1,641,429.48 and 645,574.65 is: 890,895.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,438.08 : 1,641,429.48 = 645,574.65 : x
  2. Step 2: Convert to fraction form
    1,189,438.08/1,641,429.48 = 645,574.65/x
  3. Step 3: Cross multiply
    1,189,438.08x = 1,641,429.48 × 645,574.65
  4. Step 4: Simplify right side
    1,189,438.08x = 1,059,665,262,050.68
  5. Step 5: Solve for x
    x = 1,059,665,262,050.68/1,189,438.08
  6. Step 6: Final answer
    x = 890,895.69

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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.