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Finding the Fourth Proportional to 530,015.08, 731,472.42 and 395,645.80

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Solution

The fourth proportional to 530,015.08, 731,472.42 and 395,645.80 is: 546,029.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,015.08 : 731,472.42 = 395,645.80 : x
  2. Step 2: Convert to fraction form
    530,015.08/731,472.42 = 395,645.80/x
  3. Step 3: Cross multiply
    530,015.08x = 731,472.42 × 395,645.80
  4. Step 4: Simplify right side
    530,015.08x = 289,403,990,788.84
  5. Step 5: Solve for x
    x = 289,403,990,788.84/530,015.08
  6. Step 6: Final answer
    x = 546,029.73

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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.