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Finding the Fourth Proportional to 488,607.80, 731,486.10 and 348,639.80

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Solution

The fourth proportional to 488,607.80, 731,486.10 and 348,639.80 is: 521,942.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,607.80 : 731,486.10 = 348,639.80 : x
  2. Step 2: Convert to fraction form
    488,607.80/731,486.10 = 348,639.80/x
  3. Step 3: Cross multiply
    488,607.80x = 731,486.10 × 348,639.80
  4. Step 4: Simplify right side
    488,607.80x = 255,025,167,606.78
  5. Step 5: Solve for x
    x = 255,025,167,606.78/488,607.80
  6. Step 6: Final answer
    x = 521,942.48

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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.