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Finding the Fourth Proportional to 750,987.44, 1,036,365 and 406,826.96

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Solution

The fourth proportional to 750,987.44, 1,036,365 and 406,826.96 is: 561,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,987.44 : 1,036,365 = 406,826.96 : x
  2. Step 2: Convert to fraction form
    750,987.44/1,036,365 = 406,826.96/x
  3. Step 3: Cross multiply
    750,987.44x = 1,036,365 × 406,826.96
  4. Step 4: Simplify right side
    750,987.44x = 421,621,222,400.40
  5. Step 5: Solve for x
    x = 421,621,222,400.40/750,987.44
  6. Step 6: Final answer
    x = 561,422.47

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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.