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Finding the Fourth Proportional to 555,580.48, 766,701.28 and 300,930.88

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Solution

The fourth proportional to 555,580.48, 766,701.28 and 300,930.88 is: 415,284.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,580.48 : 766,701.28 = 300,930.88 : x
  2. Step 2: Convert to fraction form
    555,580.48/766,701.28 = 300,930.88/x
  3. Step 3: Cross multiply
    555,580.48x = 766,701.28 × 300,930.88
  4. Step 4: Simplify right side
    555,580.48x = 230,724,090,887.53
  5. Step 5: Solve for x
    x = 230,724,090,887.53/555,580.48
  6. Step 6: Final answer
    x = 415,284.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.