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Finding the Fourth Proportional to 553,545.45, 830,318.18 and 543,047.85

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Solution

The fourth proportional to 553,545.45, 830,318.18 and 543,047.85 is: 814,571.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,545.45 : 830,318.18 = 543,047.85 : x
  2. Step 2: Convert to fraction form
    553,545.45/830,318.18 = 543,047.85/x
  3. Step 3: Cross multiply
    553,545.45x = 830,318.18 × 543,047.85
  4. Step 4: Simplify right side
    553,545.45x = 450,902,499,749.67
  5. Step 5: Solve for x
    x = 450,902,499,749.67/553,545.45
  6. Step 6: Final answer
    x = 814,571.78

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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.