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Finding the Fourth Proportional to 697,765.46, 963,020.43 and 425,990.88

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Solution

The fourth proportional to 697,765.46, 963,020.43 and 425,990.88 is: 587,930.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,765.46 : 963,020.43 = 425,990.88 : x
  2. Step 2: Convert to fraction form
    697,765.46/963,020.43 = 425,990.88/x
  3. Step 3: Cross multiply
    697,765.46x = 963,020.43 × 425,990.88
  4. Step 4: Simplify right side
    697,765.46x = 410,237,920,433.68
  5. Step 5: Solve for x
    x = 410,237,920,433.68/697,765.46
  6. Step 6: Final answer
    x = 587,930.97

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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.