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Finding the Fourth Proportional to 488,606.80, 731,484.60 and 348,638.80

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Solution

The fourth proportional to 488,606.80, 731,484.60 and 348,638.80 is: 521,940.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,606.80 : 731,484.60 = 348,638.80 : x
  2. Step 2: Convert to fraction form
    488,606.80/731,484.60 = 348,638.80/x
  3. Step 3: Cross multiply
    488,606.80x = 731,484.60 × 348,638.80
  4. Step 4: Simplify right side
    488,606.80x = 255,023,913,162.48
  5. Step 5: Solve for x
    x = 255,023,913,162.48/488,606.80
  6. Step 6: Final answer
    x = 521,940.98

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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.