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Finding the Fourth Proportional to 663,622.37, 915,876.62 and 377,185.51

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Solution

The fourth proportional to 663,622.37, 915,876.62 and 377,185.51 is: 520,560.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,622.37 : 915,876.62 = 377,185.51 : x
  2. Step 2: Convert to fraction form
    663,622.37/915,876.62 = 377,185.51/x
  3. Step 3: Cross multiply
    663,622.37x = 915,876.62 × 377,185.51
  4. Step 4: Simplify right side
    663,622.37x = 345,455,390,011.78
  5. Step 5: Solve for x
    x = 345,455,390,011.78/663,622.37
  6. Step 6: Final answer
    x = 520,560.19

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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.