Home / 394,721.65-592,088.01-128,483.56

Finding the Fourth Proportional to 394,721.65, 592,088.01 and 128,483.56

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Solution

The fourth proportional to 394,721.65, 592,088.01 and 128,483.56 is: 192,727.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,721.65 : 592,088.01 = 128,483.56 : x
  2. Step 2: Convert to fraction form
    394,721.65/592,088.01 = 128,483.56/x
  3. Step 3: Cross multiply
    394,721.65x = 592,088.01 × 128,483.56
  4. Step 4: Simplify right side
    394,721.65x = 76,073,575,358.12
  5. Step 5: Solve for x
    x = 76,073,575,358.12/394,721.65
  6. Step 6: Final answer
    x = 192,727.14

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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.