Home / 678,343.72-1,017,537.28-341,200.26

Finding the Fourth Proportional to 678,343.72, 1,017,537.28 and 341,200.26

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Solution

The fourth proportional to 678,343.72, 1,017,537.28 and 341,200.26 is: 511,811.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,343.72 : 1,017,537.28 = 341,200.26 : x
  2. Step 2: Convert to fraction form
    678,343.72/1,017,537.28 = 341,200.26/x
  3. Step 3: Cross multiply
    678,343.72x = 1,017,537.28 × 341,200.26
  4. Step 4: Simplify right side
    678,343.72x = 347,183,984,495.69
  5. Step 5: Solve for x
    x = 347,183,984,495.69/678,343.72
  6. Step 6: Final answer
    x = 511,811.30

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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.