Home / 401,828.40-602,742.60-313,148.25

Finding the Fourth Proportional to 401,828.40, 602,742.60 and 313,148.25

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Solution

The fourth proportional to 401,828.40, 602,742.60 and 313,148.25 is: 469,722.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,828.40 : 602,742.60 = 313,148.25 : x
  2. Step 2: Convert to fraction form
    401,828.40/602,742.60 = 313,148.25/x
  3. Step 3: Cross multiply
    401,828.40x = 602,742.60 × 313,148.25
  4. Step 4: Simplify right side
    401,828.40x = 188,747,790,390.45
  5. Step 5: Solve for x
    x = 188,747,790,390.45/401,828.40
  6. Step 6: Final answer
    x = 469,722.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.