Home / 1,018,768.56-1,406,331.63-687,696.72

Finding the Fourth Proportional to 1,018,768.56, 1,406,331.63 and 687,696.72

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Solution

The fourth proportional to 1,018,768.56, 1,406,331.63 and 687,696.72 is: 949,312.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,768.56 : 1,406,331.63 = 687,696.72 : x
  2. Step 2: Convert to fraction form
    1,018,768.56/1,406,331.63 = 687,696.72/x
  3. Step 3: Cross multiply
    1,018,768.56x = 1,406,331.63 × 687,696.72
  4. Step 4: Simplify right side
    1,018,768.56x = 967,129,649,183.25
  5. Step 5: Solve for x
    x = 967,129,649,183.25/1,018,768.56
  6. Step 6: Final answer
    x = 949,312.42

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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.