Home / 511,384.46-705,417.89-320,065.70

Finding the Fourth Proportional to 511,384.46, 705,417.89 and 320,065.70

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Solution

The fourth proportional to 511,384.46, 705,417.89 and 320,065.70 is: 441,507.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,384.46 : 705,417.89 = 320,065.70 : x
  2. Step 2: Convert to fraction form
    511,384.46/705,417.89 = 320,065.70/x
  3. Step 3: Cross multiply
    511,384.46x = 705,417.89 × 320,065.70
  4. Step 4: Simplify right side
    511,384.46x = 225,780,065,627.96
  5. Step 5: Solve for x
    x = 225,780,065,627.96/511,384.46
  6. Step 6: Final answer
    x = 441,507.49

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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.