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Finding the Fourth Proportional to 439,699.60, 657,581.10 and 368,840.80

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Solution

The fourth proportional to 439,699.60, 657,581.10 and 368,840.80 is: 551,610.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,699.60 : 657,581.10 = 368,840.80 : x
  2. Step 2: Convert to fraction form
    439,699.60/657,581.10 = 368,840.80/x
  3. Step 3: Cross multiply
    439,699.60x = 657,581.10 × 368,840.80
  4. Step 4: Simplify right side
    439,699.60x = 242,542,738,988.88
  5. Step 5: Solve for x
    x = 242,542,738,988.88/439,699.60
  6. Step 6: Final answer
    x = 551,610.10

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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.