Home / 926,290.20-1,389,435.30-393,828.60

Finding the Fourth Proportional to 926,290.20, 1,389,435.30 and 393,828.60

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Solution

The fourth proportional to 926,290.20, 1,389,435.30 and 393,828.60 is: 590,742.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,290.20 : 1,389,435.30 = 393,828.60 : x
  2. Step 2: Convert to fraction form
    926,290.20/1,389,435.30 = 393,828.60/x
  3. Step 3: Cross multiply
    926,290.20x = 1,389,435.30 × 393,828.60
  4. Step 4: Simplify right side
    926,290.20x = 547,199,358,989.58
  5. Step 5: Solve for x
    x = 547,199,358,989.58/926,290.20
  6. Step 6: Final answer
    x = 590,742.90

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Double scale
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Similar ratio
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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.