Home / 926,409.30-1,389,743.55-393,926.10

Finding the Fourth Proportional to 926,409.30, 1,389,743.55 and 393,926.10

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Solution

The fourth proportional to 926,409.30, 1,389,743.55 and 393,926.10 is: 590,944.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,409.30 : 1,389,743.55 = 393,926.10 : x
  2. Step 2: Convert to fraction form
    926,409.30/1,389,743.55 = 393,926.10/x
  3. Step 3: Cross multiply
    926,409.30x = 1,389,743.55 × 393,926.10
  4. Step 4: Simplify right side
    926,409.30x = 547,456,256,651.66
  5. Step 5: Solve for x
    x = 547,456,256,651.66/926,409.30
  6. Step 6: Final answer
    x = 590,944.26

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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.