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Finding the Fourth Proportional to 506,930.54, 699,550.26 and 289,134.29

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Solution

The fourth proportional to 506,930.54, 699,550.26 and 289,134.29 is: 398,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,930.54 : 699,550.26 = 289,134.29 : x
  2. Step 2: Convert to fraction form
    506,930.54/699,550.26 = 289,134.29/x
  3. Step 3: Cross multiply
    506,930.54x = 699,550.26 × 289,134.29
  4. Step 4: Simplify right side
    506,930.54x = 202,263,967,744.42
  5. Step 5: Solve for x
    x = 202,263,967,744.42/506,930.54
  6. Step 6: Final answer
    x = 398,997.40

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1.5x scale

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.