Home / 628,389.12-867,367.44-427,301.76

Finding the Fourth Proportional to 628,389.12, 867,367.44 and 427,301.76

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Solution

The fourth proportional to 628,389.12, 867,367.44 and 427,301.76 is: 589,805.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,389.12 : 867,367.44 = 427,301.76 : x
  2. Step 2: Convert to fraction form
    628,389.12/867,367.44 = 427,301.76/x
  3. Step 3: Cross multiply
    628,389.12x = 867,367.44 × 427,301.76
  4. Step 4: Simplify right side
    628,389.12x = 370,627,633,678.69
  5. Step 5: Solve for x
    x = 370,627,633,678.69/628,389.12
  6. Step 6: Final answer
    x = 589,805.94

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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.