Home / 660,538.05-911,527.02-388,623.43

Finding the Fourth Proportional to 660,538.05, 911,527.02 and 388,623.43

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Solution

The fourth proportional to 660,538.05, 911,527.02 and 388,623.43 is: 536,291.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,538.05 : 911,527.02 = 388,623.43 : x
  2. Step 2: Convert to fraction form
    660,538.05/911,527.02 = 388,623.43/x
  3. Step 3: Cross multiply
    660,538.05x = 911,527.02 × 388,623.43
  4. Step 4: Simplify right side
    660,538.05x = 354,240,757,050.08
  5. Step 5: Solve for x
    x = 354,240,757,050.08/660,538.05
  6. Step 6: Final answer
    x = 536,291.22

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1.5x scale

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.