Home / 612,738.99-918,148.05-387,623.88

Finding the Fourth Proportional to 612,738.99, 918,148.05 and 387,623.88

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Solution

The fourth proportional to 612,738.99, 918,148.05 and 387,623.88 is: 580,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,738.99 : 918,148.05 = 387,623.88 : x
  2. Step 2: Convert to fraction form
    612,738.99/918,148.05 = 387,623.88/x
  3. Step 3: Cross multiply
    612,738.99x = 918,148.05 × 387,623.88
  4. Step 4: Simplify right side
    612,738.99x = 355,896,109,555.43
  5. Step 5: Solve for x
    x = 355,896,109,555.43/612,738.99
  6. Step 6: Final answer
    x = 580,828.24

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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.