Home / 394,983.23-592,536.29-128,681.78

Finding the Fourth Proportional to 394,983.23, 592,536.29 and 128,681.78

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Solution

The fourth proportional to 394,983.23, 592,536.29 and 128,681.78 is: 193,042.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,983.23 : 592,536.29 = 128,681.78 : x
  2. Step 2: Convert to fraction form
    394,983.23/592,536.29 = 128,681.78/x
  3. Step 3: Cross multiply
    394,983.23x = 592,536.29 × 128,681.78
  4. Step 4: Simplify right side
    394,983.23x = 76,248,620,905.71
  5. Step 5: Solve for x
    x = 76,248,620,905.71/394,983.23
  6. Step 6: Final answer
    x = 193,042.68

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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.