Home / 730,450.13-1,008,121.31-420,346.34

Finding the Fourth Proportional to 730,450.13, 1,008,121.31 and 420,346.34

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Solution

The fourth proportional to 730,450.13, 1,008,121.31 and 420,346.34 is: 580,135.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,450.13 : 1,008,121.31 = 420,346.34 : x
  2. Step 2: Convert to fraction form
    730,450.13/1,008,121.31 = 420,346.34/x
  3. Step 3: Cross multiply
    730,450.13x = 1,008,121.31 × 420,346.34
  4. Step 4: Simplify right side
    730,450.13x = 423,760,095,792.17
  5. Step 5: Solve for x
    x = 423,760,095,792.17/730,450.13
  6. Step 6: Final answer
    x = 580,135.56

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Double scale
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1.5x scale

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.