Home / 1,189,241.94-1,641,158.16-645,377.60

Finding the Fourth Proportional to 1,189,241.94, 1,641,158.16 and 645,377.60

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Solution

The fourth proportional to 1,189,241.94, 1,641,158.16 and 645,377.60 is: 890,623.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,241.94 : 1,641,158.16 = 645,377.60 : x
  2. Step 2: Convert to fraction form
    1,189,241.94/1,641,158.16 = 645,377.60/x
  3. Step 3: Cross multiply
    1,189,241.94x = 1,641,158.16 × 645,377.60
  4. Step 4: Simplify right side
    1,189,241.94x = 1,059,166,714,521.22
  5. Step 5: Solve for x
    x = 1,059,166,714,521.22/1,189,241.94
  6. Step 6: Final answer
    x = 890,623.41

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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.