Home / 926,548.80-1,388,786.40-393,979.20

Finding the Fourth Proportional to 926,548.80, 1,388,786.40 and 393,979.20

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Solution

The fourth proportional to 926,548.80, 1,388,786.40 and 393,979.20 is: 590,527.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,548.80 : 1,388,786.40 = 393,979.20 : x
  2. Step 2: Convert to fraction form
    926,548.80/1,388,786.40 = 393,979.20/x
  3. Step 3: Cross multiply
    926,548.80x = 1,388,786.40 × 393,979.20
  4. Step 4: Simplify right side
    926,548.80x = 547,152,954,842.88
  5. Step 5: Solve for x
    x = 547,152,954,842.88/926,548.80
  6. Step 6: Final answer
    x = 590,527.94

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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.