Home / 553,621.78-763,998.05-298,972.94

Finding the Fourth Proportional to 553,621.78, 763,998.05 and 298,972.94

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Solution

The fourth proportional to 553,621.78, 763,998.05 and 298,972.94 is: 412,582.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,621.78 : 763,998.05 = 298,972.94 : x
  2. Step 2: Convert to fraction form
    553,621.78/763,998.05 = 298,972.94/x
  3. Step 3: Cross multiply
    553,621.78x = 763,998.05 × 298,972.94
  4. Step 4: Simplify right side
    553,621.78x = 228,414,741,667.90
  5. Step 5: Solve for x
    x = 228,414,741,667.90/553,621.78
  6. Step 6: Final answer
    x = 412,582.65

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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.