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Finding the Fourth Proportional to 488,608.40, 731,357.40 and 348,640.40

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Solution

The fourth proportional to 488,608.40, 731,357.40 and 348,640.40 is: 521,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,608.40 : 731,357.40 = 348,640.40 : x
  2. Step 2: Convert to fraction form
    488,608.40/731,357.40 = 348,640.40/x
  3. Step 3: Cross multiply
    488,608.40x = 731,357.40 × 348,640.40
  4. Step 4: Simplify right side
    488,608.40x = 254,980,736,478.96
  5. Step 5: Solve for x
    x = 254,980,736,478.96/488,608.40
  6. Step 6: Final answer
    x = 521,850.91

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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.