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Finding the Fourth Proportional to 511,430.79, 767,405.31 and 340,769.16

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Solution

The fourth proportional to 511,430.79, 767,405.31 and 340,769.16 is: 511,326.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,430.79 : 767,405.31 = 340,769.16 : x
  2. Step 2: Convert to fraction form
    511,430.79/767,405.31 = 340,769.16/x
  3. Step 3: Cross multiply
    511,430.79x = 767,405.31 × 340,769.16
  4. Step 4: Simplify right side
    511,430.79x = 261,508,061,590.36
  5. Step 5: Solve for x
    x = 261,508,061,590.36/511,430.79
  6. Step 6: Final answer
    x = 511,326.39

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1.5x scale

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.