Home / 394,810.11-592,256.65-128,591.36

Finding the Fourth Proportional to 394,810.11, 592,256.65 and 128,591.36

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Solution

The fourth proportional to 394,810.11, 592,256.65 and 128,591.36 is: 192,900.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,810.11 : 592,256.65 = 128,591.36 : x
  2. Step 2: Convert to fraction form
    394,810.11/592,256.65 = 128,591.36/x
  3. Step 3: Cross multiply
    394,810.11x = 592,256.65 × 128,591.36
  4. Step 4: Simplify right side
    394,810.11x = 76,159,088,124.23
  5. Step 5: Solve for x
    x = 76,159,088,124.23/394,810.11
  6. Step 6: Final answer
    x = 192,900.55

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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.