Home / 926,039.70-1,389,059.55-393,578.10

Finding the Fourth Proportional to 926,039.70, 1,389,059.55 and 393,578.10

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Solution

The fourth proportional to 926,039.70, 1,389,059.55 and 393,578.10 is: 590,367.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,039.70 : 1,389,059.55 = 393,578.10 : x
  2. Step 2: Convert to fraction form
    926,039.70/1,389,059.55 = 393,578.10/x
  3. Step 3: Cross multiply
    926,039.70x = 1,389,059.55 × 393,578.10
  4. Step 4: Simplify right side
    926,039.70x = 546,703,418,475.86
  5. Step 5: Solve for x
    x = 546,703,418,475.86/926,039.70
  6. Step 6: Final answer
    x = 590,367.15

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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.