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Finding the Fourth Proportional to 661,505.10, 992,776.05 and 306,563.10

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Solution

The fourth proportional to 661,505.10, 992,776.05 and 306,563.10 is: 460,084.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,505.10 : 992,776.05 = 306,563.10 : x
  2. Step 2: Convert to fraction form
    661,505.10/992,776.05 = 306,563.10/x
  3. Step 3: Cross multiply
    661,505.10x = 992,776.05 × 306,563.10
  4. Step 4: Simplify right side
    661,505.10x = 304,348,503,493.76
  5. Step 5: Solve for x
    x = 304,348,503,493.76/661,505.10
  6. Step 6: Final answer
    x = 460,084.89

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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.