Home / 674,018.40-1,010,336.40-393,391.20

Finding the Fourth Proportional to 674,018.40, 1,010,336.40 and 393,391.20

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Solution

The fourth proportional to 674,018.40, 1,010,336.40 and 393,391.20 is: 589,683.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,018.40 : 1,010,336.40 = 393,391.20 : x
  2. Step 2: Convert to fraction form
    674,018.40/1,010,336.40 = 393,391.20/x
  3. Step 3: Cross multiply
    674,018.40x = 1,010,336.40 × 393,391.20
  4. Step 4: Simplify right side
    674,018.40x = 397,457,448,799.68
  5. Step 5: Solve for x
    x = 397,457,448,799.68/674,018.40
  6. Step 6: Final answer
    x = 589,683.38

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Double scale
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Similar ratio
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1.5x scale

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.