Home / 685,639.49-946,436.39-413,718.85

Finding the Fourth Proportional to 685,639.49, 946,436.39 and 413,718.85

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Solution

The fourth proportional to 685,639.49, 946,436.39 and 413,718.85 is: 571,085.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,639.49 : 946,436.39 = 413,718.85 : x
  2. Step 2: Convert to fraction form
    685,639.49/946,436.39 = 413,718.85/x
  3. Step 3: Cross multiply
    685,639.49x = 946,436.39 × 413,718.85
  4. Step 4: Simplify right side
    685,639.49x = 391,558,572,291.20
  5. Step 5: Solve for x
    x = 391,558,572,291.20/685,639.49
  6. Step 6: Final answer
    x = 571,085.21

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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.