Home / 619,623.92-855,626.28-387,448.76

Finding the Fourth Proportional to 619,623.92, 855,626.28 and 387,448.76

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Solution

The fourth proportional to 619,623.92, 855,626.28 and 387,448.76 is: 535,020.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,623.92 : 855,626.28 = 387,448.76 : x
  2. Step 2: Convert to fraction form
    619,623.92/855,626.28 = 387,448.76/x
  3. Step 3: Cross multiply
    619,623.92x = 855,626.28 × 387,448.76
  4. Step 4: Simplify right side
    619,623.92x = 331,511,341,209.41
  5. Step 5: Solve for x
    x = 331,511,341,209.41/619,623.92
  6. Step 6: Final answer
    x = 535,020.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.