Home / 621,455.03-857,509.07-349,470.35

Finding the Fourth Proportional to 621,455.03, 857,509.07 and 349,470.35

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Solution

The fourth proportional to 621,455.03, 857,509.07 and 349,470.35 is: 482,213.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,455.03 : 857,509.07 = 349,470.35 : x
  2. Step 2: Convert to fraction form
    621,455.03/857,509.07 = 349,470.35/x
  3. Step 3: Cross multiply
    621,455.03x = 857,509.07 × 349,470.35
  4. Step 4: Simplify right side
    621,455.03x = 299,673,988,786.18
  5. Step 5: Solve for x
    x = 299,673,988,786.18/621,455.03
  6. Step 6: Final answer
    x = 482,213.48

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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.