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Finding the Fourth Proportional to 553,485.33, 830,490.44 and 329,288.67

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Solution

The fourth proportional to 553,485.33, 830,490.44 and 329,288.67 is: 494,089.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,485.33 : 830,490.44 = 329,288.67 : x
  2. Step 2: Convert to fraction form
    553,485.33/830,490.44 = 329,288.67/x
  3. Step 3: Cross multiply
    553,485.33x = 830,490.44 × 329,288.67
  4. Step 4: Simplify right side
    553,485.33x = 273,471,092,435.32
  5. Step 5: Solve for x
    x = 273,471,092,435.32/553,485.33
  6. Step 6: Final answer
    x = 494,089.14

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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.