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Finding the Fourth Proportional to 553,622.28, 763,998.74 and 298,973.44

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Solution

The fourth proportional to 553,622.28, 763,998.74 and 298,973.44 is: 412,583.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,622.28 : 763,998.74 = 298,973.44 : x
  2. Step 2: Convert to fraction form
    553,622.28/763,998.74 = 298,973.44/x
  3. Step 3: Cross multiply
    553,622.28x = 763,998.74 × 298,973.44
  4. Step 4: Simplify right side
    553,622.28x = 228,415,329,958.60
  5. Step 5: Solve for x
    x = 228,415,329,958.60/553,622.28
  6. Step 6: Final answer
    x = 412,583.34

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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.