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Finding the Fourth Proportional to 628,611.84, 867,502.73 and 342,150.48

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Solution

The fourth proportional to 628,611.84, 867,502.73 and 342,150.48 is: 472,177.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,611.84 : 867,502.73 = 342,150.48 : x
  2. Step 2: Convert to fraction form
    628,611.84/867,502.73 = 342,150.48/x
  3. Step 3: Cross multiply
    628,611.84x = 867,502.73 × 342,150.48
  4. Step 4: Simplify right side
    628,611.84x = 296,816,475,470.81
  5. Step 5: Solve for x
    x = 296,816,475,470.81/628,611.84
  6. Step 6: Final answer
    x = 472,177.67

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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.