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Finding the Fourth Proportional to 553,630.32, 764,009.84 and 298,981.50

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Solution

The fourth proportional to 553,630.32, 764,009.84 and 298,981.50 is: 412,594.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,630.32 : 764,009.84 = 298,981.50 : x
  2. Step 2: Convert to fraction form
    553,630.32/764,009.84 = 298,981.50/x
  3. Step 3: Cross multiply
    553,630.32x = 764,009.84 × 298,981.50
  4. Step 4: Simplify right side
    553,630.32x = 228,424,807,977.96
  5. Step 5: Solve for x
    x = 228,424,807,977.96/553,630.32
  6. Step 6: Final answer
    x = 412,594.47

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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.