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Finding the Fourth Proportional to 709,576, 979,065.26 and 451,359.07

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Solution

The fourth proportional to 709,576, 979,065.26 and 451,359.07 is: 622,780.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,576 : 979,065.26 = 451,359.07 : x
  2. Step 2: Convert to fraction form
    709,576/979,065.26 = 451,359.07/x
  3. Step 3: Cross multiply
    709,576x = 979,065.26 × 451,359.07
  4. Step 4: Simplify right side
    709,576x = 441,909,982,966.11
  5. Step 5: Solve for x
    x = 441,909,982,966.11/709,576
  6. Step 6: Final answer
    x = 622,780.34

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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.