Home / 1,403,449.30-1,936,978.44-921,412.66

Finding the Fourth Proportional to 1,403,449.30, 1,936,978.44 and 921,412.66

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Solution

The fourth proportional to 1,403,449.30, 1,936,978.44 and 921,412.66 is: 1,271,692.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403,449.30 : 1,936,978.44 = 921,412.66 : x
  2. Step 2: Convert to fraction form
    1,403,449.30/1,936,978.44 = 921,412.66/x
  3. Step 3: Cross multiply
    1,403,449.30x = 1,936,978.44 × 921,412.66
  4. Step 4: Simplify right side
    1,403,449.30x = 1,784,756,456,763.05
  5. Step 5: Solve for x
    x = 1,784,756,456,763.05/1,403,449.30
  6. Step 6: Final answer
    x = 1,271,692.86

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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.