Home / 815,827.32-1,126,002.78-521,288.64

Finding the Fourth Proportional to 815,827.32, 1,126,002.78 and 521,288.64

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Solution

The fourth proportional to 815,827.32, 1,126,002.78 and 521,288.64 is: 719,481.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,827.32 : 1,126,002.78 = 521,288.64 : x
  2. Step 2: Convert to fraction form
    815,827.32/1,126,002.78 = 521,288.64/x
  3. Step 3: Cross multiply
    815,827.32x = 1,126,002.78 × 521,288.64
  4. Step 4: Simplify right side
    815,827.32x = 586,972,457,822.42
  5. Step 5: Solve for x
    x = 586,972,457,822.42/815,827.32
  6. Step 6: Final answer
    x = 719,481.25

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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.