Home / 646,643.18-892,383.68-360,168.05

Finding the Fourth Proportional to 646,643.18, 892,383.68 and 360,168.05

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Solution

The fourth proportional to 646,643.18, 892,383.68 and 360,168.05 is: 497,040.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,643.18 : 892,383.68 = 360,168.05 : x
  2. Step 2: Convert to fraction form
    646,643.18/892,383.68 = 360,168.05/x
  3. Step 3: Cross multiply
    646,643.18x = 892,383.68 × 360,168.05
  4. Step 4: Simplify right side
    646,643.18x = 321,408,093,008.80
  5. Step 5: Solve for x
    x = 321,408,093,008.80/646,643.18
  6. Step 6: Final answer
    x = 497,040.87

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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.