Home / 439,975.29-607,174.49-287,111.28

Finding the Fourth Proportional to 439,975.29, 607,174.49 and 287,111.28

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Solution

The fourth proportional to 439,975.29, 607,174.49 and 287,111.28 is: 396,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,975.29 : 607,174.49 = 287,111.28 : x
  2. Step 2: Convert to fraction form
    439,975.29/607,174.49 = 287,111.28/x
  3. Step 3: Cross multiply
    439,975.29x = 607,174.49 × 287,111.28
  4. Step 4: Simplify right side
    439,975.29x = 174,326,643,571.69
  5. Step 5: Solve for x
    x = 174,326,643,571.69/439,975.29
  6. Step 6: Final answer
    x = 396,219.17

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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.