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Finding the Fourth Proportional to 530,658.09, 732,301.79 and 288,940.59

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Solution

The fourth proportional to 530,658.09, 732,301.79 and 288,940.59 is: 398,734.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,658.09 : 732,301.79 = 288,940.59 : x
  2. Step 2: Convert to fraction form
    530,658.09/732,301.79 = 288,940.59/x
  3. Step 3: Cross multiply
    530,658.09x = 732,301.79 × 288,940.59
  4. Step 4: Simplify right side
    530,658.09x = 211,591,709,815.95
  5. Step 5: Solve for x
    x = 211,591,709,815.95/530,658.09
  6. Step 6: Final answer
    x = 398,734.54

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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.