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Finding the Fourth Proportional to 641,694.98, 963,488.69 and 357,939.92

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Solution

The fourth proportional to 641,694.98, 963,488.69 and 357,939.92 is: 537,437.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,694.98 : 963,488.69 = 357,939.92 : x
  2. Step 2: Convert to fraction form
    641,694.98/963,488.69 = 357,939.92/x
  3. Step 3: Cross multiply
    641,694.98x = 963,488.69 × 357,939.92
  4. Step 4: Simplify right side
    641,694.98x = 344,871,058,012.36
  5. Step 5: Solve for x
    x = 344,871,058,012.36/641,694.98
  6. Step 6: Final answer
    x = 537,437.68

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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.