Home / 1,189,140.86-1,641,006.07-645,262.82

Finding the Fourth Proportional to 1,189,140.86, 1,641,006.07 and 645,262.82

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Solution

The fourth proportional to 1,189,140.86, 1,641,006.07 and 645,262.82 is: 890,458.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,140.86 : 1,641,006.07 = 645,262.82 : x
  2. Step 2: Convert to fraction form
    1,189,140.86/1,641,006.07 = 645,262.82/x
  3. Step 3: Cross multiply
    1,189,140.86x = 1,641,006.07 × 645,262.82
  4. Step 4: Simplify right side
    1,189,140.86x = 1,058,880,200,700.90
  5. Step 5: Solve for x
    x = 1,058,880,200,700.90/1,189,140.86
  6. Step 6: Final answer
    x = 890,458.17

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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.