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Finding the Fourth Proportional to 608,161.77, 912,391.29 and 428,597.73

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Solution

The fourth proportional to 608,161.77, 912,391.29 and 428,597.73 is: 643,001.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,161.77 : 912,391.29 = 428,597.73 : x
  2. Step 2: Convert to fraction form
    608,161.77/912,391.29 = 428,597.73/x
  3. Step 3: Cross multiply
    608,161.77x = 912,391.29 × 428,597.73
  4. Step 4: Simplify right side
    608,161.77x = 391,048,835,765.77
  5. Step 5: Solve for x
    x = 391,048,835,765.77/608,161.77
  6. Step 6: Final answer
    x = 643,001.34

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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.