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Finding the Fourth Proportional to 612,502.87, 918,694.43 and 186,042.39

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Solution

The fourth proportional to 612,502.87, 918,694.43 and 186,042.39 is: 279,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,502.87 : 918,694.43 = 186,042.39 : x
  2. Step 2: Convert to fraction form
    612,502.87/918,694.43 = 186,042.39/x
  3. Step 3: Cross multiply
    612,502.87x = 918,694.43 × 186,042.39
  4. Step 4: Simplify right side
    612,502.87x = 170,916,107,436.89
  5. Step 5: Solve for x
    x = 170,916,107,436.89/612,502.87
  6. Step 6: Final answer
    x = 279,045.40

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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.