Home / 925,129.69-1,387,898.65-393,105.49

Finding the Fourth Proportional to 925,129.69, 1,387,898.65 and 393,105.49

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Solution

The fourth proportional to 925,129.69, 1,387,898.65 and 393,105.49 is: 589,744.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,129.69 : 1,387,898.65 = 393,105.49 : x
  2. Step 2: Convert to fraction form
    925,129.69/1,387,898.65 = 393,105.49/x
  3. Step 3: Cross multiply
    925,129.69x = 1,387,898.65 × 393,105.49
  4. Step 4: Simplify right side
    925,129.69x = 545,590,575,900.22
  5. Step 5: Solve for x
    x = 545,590,575,900.22/925,129.69
  6. Step 6: Final answer
    x = 589,744.97

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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.