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Finding the Fourth Proportional to 488,572.60, 731,822.10 and 405,628.60

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Solution

The fourth proportional to 488,572.60, 731,822.10 and 405,628.60 is: 607,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,572.60 : 731,822.10 = 405,628.60 : x
  2. Step 2: Convert to fraction form
    488,572.60/731,822.10 = 405,628.60/x
  3. Step 3: Cross multiply
    488,572.60x = 731,822.10 × 405,628.60
  4. Step 4: Simplify right side
    488,572.60x = 296,847,973,872.06
  5. Step 5: Solve for x
    x = 296,847,973,872.06/488,572.60
  6. Step 6: Final answer
    x = 607,582.12

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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.