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Finding the Fourth Proportional to 636,415.45, 954,887.54 and 257,603.97

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Solution

The fourth proportional to 636,415.45, 954,887.54 and 257,603.97 is: 386,512.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,415.45 : 954,887.54 = 257,603.97 : x
  2. Step 2: Convert to fraction form
    636,415.45/954,887.54 = 257,603.97/x
  3. Step 3: Cross multiply
    636,415.45x = 954,887.54 × 257,603.97
  4. Step 4: Simplify right side
    636,415.45x = 245,982,821,207.53
  5. Step 5: Solve for x
    x = 245,982,821,207.53/636,415.45
  6. Step 6: Final answer
    x = 386,512.96

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1.5x scale

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.