Home / 767,821.86-1,151,732.79-393,606.18

Finding the Fourth Proportional to 767,821.86, 1,151,732.79 and 393,606.18

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Solution

The fourth proportional to 767,821.86, 1,151,732.79 and 393,606.18 is: 590,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,821.86 : 1,151,732.79 = 393,606.18 : x
  2. Step 2: Convert to fraction form
    767,821.86/1,151,732.79 = 393,606.18/x
  3. Step 3: Cross multiply
    767,821.86x = 1,151,732.79 × 393,606.18
  4. Step 4: Simplify right side
    767,821.86x = 453,329,143,852.64
  5. Step 5: Solve for x
    x = 453,329,143,852.64/767,821.86
  6. Step 6: Final answer
    x = 590,409.27

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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.