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Finding the Fourth Proportional to 456,860, 685,290 and 124,436

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Solution

The fourth proportional to 456,860, 685,290 and 124,436 is: 186,654

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,860 : 685,290 = 124,436 : x
  2. Step 2: Convert to fraction form
    456,860/685,290 = 124,436/x
  3. Step 3: Cross multiply
    456,860x = 685,290 × 124,436
  4. Step 4: Simplify right side
    456,860x = 85,274,746,440
  5. Step 5: Solve for x
    x = 85,274,746,440/456,860
  6. Step 6: Final answer
    x = 186,654

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.