Home / 678,326.30-936,255.41-406,555.10

Finding the Fourth Proportional to 678,326.30, 936,255.41 and 406,555.10

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Solution

The fourth proportional to 678,326.30, 936,255.41 and 406,555.10 is: 561,144.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,326.30 : 936,255.41 = 406,555.10 : x
  2. Step 2: Convert to fraction form
    678,326.30/936,255.41 = 406,555.10/x
  3. Step 3: Cross multiply
    678,326.30x = 936,255.41 × 406,555.10
  4. Step 4: Simplify right side
    678,326.30x = 380,639,405,124.04
  5. Step 5: Solve for x
    x = 380,639,405,124.04/678,326.30
  6. Step 6: Final answer
    x = 561,144.99

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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.