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Finding the Fourth Proportional to 486,057.60, 670,489.92 and 284,814.72

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Solution

The fourth proportional to 486,057.60, 670,489.92 and 284,814.72 is: 392,886.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,057.60 : 670,489.92 = 284,814.72 : x
  2. Step 2: Convert to fraction form
    486,057.60/670,489.92 = 284,814.72/x
  3. Step 3: Cross multiply
    486,057.60x = 670,489.92 × 284,814.72
  4. Step 4: Simplify right side
    486,057.60x = 190,965,398,827.62
  5. Step 5: Solve for x
    x = 190,965,398,827.62/486,057.60
  6. Step 6: Final answer
    x = 392,886.36

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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.