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Finding the Fourth Proportional to 553,291.56, 828,606.96 and 315,914.76

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Solution

The fourth proportional to 553,291.56, 828,606.96 and 315,914.76 is: 473,112.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,291.56 : 828,606.96 = 315,914.76 : x
  2. Step 2: Convert to fraction form
    553,291.56/828,606.96 = 315,914.76/x
  3. Step 3: Cross multiply
    553,291.56x = 828,606.96 × 315,914.76
  4. Step 4: Simplify right side
    553,291.56x = 261,769,168,902.73
  5. Step 5: Solve for x
    x = 261,769,168,902.73/553,291.56
  6. Step 6: Final answer
    x = 473,112.53

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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.