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Finding the Fourth Proportional to 476,761.74, 657,656.12 and 285,664.40

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Solution

The fourth proportional to 476,761.74, 657,656.12 and 285,664.40 is: 394,052.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,761.74 : 657,656.12 = 285,664.40 : x
  2. Step 2: Convert to fraction form
    476,761.74/657,656.12 = 285,664.40/x
  3. Step 3: Cross multiply
    476,761.74x = 657,656.12 × 285,664.40
  4. Step 4: Simplify right side
    476,761.74x = 187,868,940,926.13
  5. Step 5: Solve for x
    x = 187,868,940,926.13/476,761.74
  6. Step 6: Final answer
    x = 394,052.05

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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.