Home / 1,189,148-1,641,015.90-645,269.94

Finding the Fourth Proportional to 1,189,148, 1,641,015.90 and 645,269.94

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Solution

The fourth proportional to 1,189,148, 1,641,015.90 and 645,269.94 is: 890,467.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,148 : 1,641,015.90 = 645,269.94 : x
  2. Step 2: Convert to fraction form
    1,189,148/1,641,015.90 = 645,269.94/x
  3. Step 3: Cross multiply
    1,189,148x = 1,641,015.90 × 645,269.94
  4. Step 4: Simplify right side
    1,189,148x = 1,058,898,231,332.05
  5. Step 5: Solve for x
    x = 1,058,898,231,332.05/1,189,148
  6. Step 6: Final answer
    x = 890,467.99

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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.