Home / 511,815.86-706,305.96-285,461.36

Finding the Fourth Proportional to 511,815.86, 706,305.96 and 285,461.36

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Solution

The fourth proportional to 511,815.86, 706,305.96 and 285,461.36 is: 393,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,815.86 : 706,305.96 = 285,461.36 : x
  2. Step 2: Convert to fraction form
    511,815.86/706,305.96 = 285,461.36/x
  3. Step 3: Cross multiply
    511,815.86x = 706,305.96 × 285,461.36
  4. Step 4: Simplify right side
    511,815.86x = 201,623,059,917.71
  5. Step 5: Solve for x
    x = 201,623,059,917.71/511,815.86
  6. Step 6: Final answer
    x = 393,936.72

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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.