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Finding the Fourth Proportional to 486,006, 670,688.70 and 271,146.12

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Solution

The fourth proportional to 486,006, 670,688.70 and 271,146.12 is: 374,181.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,006 : 670,688.70 = 271,146.12 : x
  2. Step 2: Convert to fraction form
    486,006/670,688.70 = 271,146.12/x
  3. Step 3: Cross multiply
    486,006x = 670,688.70 × 271,146.12
  4. Step 4: Simplify right side
    486,006x = 181,854,638,732.84
  5. Step 5: Solve for x
    x = 181,854,638,732.84/486,006
  6. Step 6: Final answer
    x = 374,181.88

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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.