Home / 644,891.09-889,986.51-358,429.32

Finding the Fourth Proportional to 644,891.09, 889,986.51 and 358,429.32

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Solution

The fourth proportional to 644,891.09, 889,986.51 and 358,429.32 is: 494,652.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,891.09 : 889,986.51 = 358,429.32 : x
  2. Step 2: Convert to fraction form
    644,891.09/889,986.51 = 358,429.32/x
  3. Step 3: Cross multiply
    644,891.09x = 889,986.51 × 358,429.32
  4. Step 4: Simplify right side
    644,891.09x = 318,997,259,588.47
  5. Step 5: Solve for x
    x = 318,997,259,588.47/644,891.09
  6. Step 6: Final answer
    x = 494,652.92

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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.