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Finding the Fourth Proportional to 660,109.93, 990,164.93 and 360,427.04

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Solution

The fourth proportional to 660,109.93, 990,164.93 and 360,427.04 is: 540,640.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,109.93 : 990,164.93 = 360,427.04 : x
  2. Step 2: Convert to fraction form
    660,109.93/990,164.93 = 360,427.04/x
  3. Step 3: Cross multiply
    660,109.93x = 990,164.93 × 360,427.04
  4. Step 4: Simplify right side
    660,109.93x = 356,882,217,361.54
  5. Step 5: Solve for x
    x = 356,882,217,361.54/660,109.93
  6. Step 6: Final answer
    x = 540,640.58

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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.