Home / 393,780.45-590,764.77-127,541.28

Finding the Fourth Proportional to 393,780.45, 590,764.77 and 127,541.28

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Solution

The fourth proportional to 393,780.45, 590,764.77 and 127,541.28 is: 191,342.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,780.45 : 590,764.77 = 127,541.28 : x
  2. Step 2: Convert to fraction form
    393,780.45/590,764.77 = 127,541.28/x
  3. Step 3: Cross multiply
    393,780.45x = 590,764.77 × 127,541.28
  4. Step 4: Simplify right side
    393,780.45x = 75,346,894,944.71
  5. Step 5: Solve for x
    x = 75,346,894,944.71/393,780.45
  6. Step 6: Final answer
    x = 191,342.40

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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.