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Finding the Fourth Proportional to 609,110.78, 840,574.80 and 329,707.94

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Solution

The fourth proportional to 609,110.78, 840,574.80 and 329,707.94 is: 454,998.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,110.78 : 840,574.80 = 329,707.94 : x
  2. Step 2: Convert to fraction form
    609,110.78/840,574.80 = 329,707.94/x
  3. Step 3: Cross multiply
    609,110.78x = 840,574.80 × 329,707.94
  4. Step 4: Simplify right side
    609,110.78x = 277,144,185,723.91
  5. Step 5: Solve for x
    x = 277,144,185,723.91/609,110.78
  6. Step 6: Final answer
    x = 454,998.00

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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.