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Finding the Fourth Proportional to 506,930.04, 699,549.57 and 289,133.79

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Solution

The fourth proportional to 506,930.04, 699,549.57 and 289,133.79 is: 398,996.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,930.04 : 699,549.57 = 289,133.79 : x
  2. Step 2: Convert to fraction form
    506,930.04/699,549.57 = 289,133.79/x
  3. Step 3: Cross multiply
    506,930.04x = 699,549.57 × 289,133.79
  4. Step 4: Simplify right side
    506,930.04x = 202,263,418,466.97
  5. Step 5: Solve for x
    x = 202,263,418,466.97/506,930.04
  6. Step 6: Final answer
    x = 398,996.71

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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.