Home / 685,531.23-946,018.08-399,045.17

Finding the Fourth Proportional to 685,531.23, 946,018.08 and 399,045.17

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Solution

The fourth proportional to 685,531.23, 946,018.08 and 399,045.17 is: 550,673.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,531.23 : 946,018.08 = 399,045.17 : x
  2. Step 2: Convert to fraction form
    685,531.23/946,018.08 = 399,045.17/x
  3. Step 3: Cross multiply
    685,531.23x = 946,018.08 × 399,045.17
  4. Step 4: Simplify right side
    685,531.23x = 377,503,940,826.58
  5. Step 5: Solve for x
    x = 377,503,940,826.58/685,531.23
  6. Step 6: Final answer
    x = 550,673.59

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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.