Home / 1,189,418.70-1,641,356.06-645,543.55

Finding the Fourth Proportional to 1,189,418.70, 1,641,356.06 and 645,543.55

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Solution

The fourth proportional to 1,189,418.70, 1,641,356.06 and 645,543.55 is: 890,827.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,418.70 : 1,641,356.06 = 645,543.55 : x
  2. Step 2: Convert to fraction form
    1,189,418.70/1,641,356.06 = 645,543.55/x
  3. Step 3: Cross multiply
    1,189,418.70x = 1,641,356.06 × 645,543.55
  4. Step 4: Simplify right side
    1,189,418.70x = 1,059,566,817,786.41
  5. Step 5: Solve for x
    x = 1,059,566,817,786.41/1,189,418.70
  6. Step 6: Final answer
    x = 890,827.44

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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.