Home / 689,450.84-1,034,180.84-240,180.20

Finding the Fourth Proportional to 689,450.84, 1,034,180.84 and 240,180.20

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Solution

The fourth proportional to 689,450.84, 1,034,180.84 and 240,180.20 is: 360,271.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,450.84 : 1,034,180.84 = 240,180.20 : x
  2. Step 2: Convert to fraction form
    689,450.84/1,034,180.84 = 240,180.20/x
  3. Step 3: Cross multiply
    689,450.84x = 1,034,180.84 × 240,180.20
  4. Step 4: Simplify right side
    689,450.84x = 248,389,760,987.37
  5. Step 5: Solve for x
    x = 248,389,760,987.37/689,450.84
  6. Step 6: Final answer
    x = 360,271.90

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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.