Home / 628,476.81-867,317.52-356,556.16

Finding the Fourth Proportional to 628,476.81, 867,317.52 and 356,556.16

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Solution

The fourth proportional to 628,476.81, 867,317.52 and 356,556.16 is: 492,058.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,476.81 : 867,317.52 = 356,556.16 : x
  2. Step 2: Convert to fraction form
    628,476.81/867,317.52 = 356,556.16/x
  3. Step 3: Cross multiply
    628,476.81x = 867,317.52 × 356,556.16
  4. Step 4: Simplify right side
    628,476.81x = 309,247,404,431.92
  5. Step 5: Solve for x
    x = 309,247,404,431.92/628,476.81
  6. Step 6: Final answer
    x = 492,058.58

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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.