Home / 926,409.80-1,389,744.30-393,926.60

Finding the Fourth Proportional to 926,409.80, 1,389,744.30 and 393,926.60

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Solution

The fourth proportional to 926,409.80, 1,389,744.30 and 393,926.60 is: 590,945.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,409.80 : 1,389,744.30 = 393,926.60 : x
  2. Step 2: Convert to fraction form
    926,409.80/1,389,744.30 = 393,926.60/x
  3. Step 3: Cross multiply
    926,409.80x = 1,389,744.30 × 393,926.60
  4. Step 4: Simplify right side
    926,409.80x = 547,457,246,968.38
  5. Step 5: Solve for x
    x = 547,457,246,968.38/926,409.80
  6. Step 6: Final answer
    x = 590,945.01

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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.