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Finding the Fourth Proportional to 528,296.55, 791,045.15 and 278,453.67

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Solution

The fourth proportional to 528,296.55, 791,045.15 and 278,453.67 is: 416,942.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,296.55 : 791,045.15 = 278,453.67 : x
  2. Step 2: Convert to fraction form
    528,296.55/791,045.15 = 278,453.67/x
  3. Step 3: Cross multiply
    528,296.55x = 791,045.15 × 278,453.67
  4. Step 4: Simplify right side
    528,296.55x = 220,269,423,760.93
  5. Step 5: Solve for x
    x = 220,269,423,760.93/528,296.55
  6. Step 6: Final answer
    x = 416,942.76

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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.