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Finding the Fourth Proportional to 685,859.83, 946,476.31 and 379,935.29

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Solution

The fourth proportional to 685,859.83, 946,476.31 and 379,935.29 is: 524,305.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,859.83 : 946,476.31 = 379,935.29 : x
  2. Step 2: Convert to fraction form
    685,859.83/946,476.31 = 379,935.29/x
  3. Step 3: Cross multiply
    685,859.83x = 946,476.31 × 379,935.29
  4. Step 4: Simplify right side
    685,859.83x = 359,599,749,418.30
  5. Step 5: Solve for x
    x = 359,599,749,418.30/685,859.83
  6. Step 6: Final answer
    x = 524,305.02

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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.