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Finding the Fourth Proportional to 508,712.76, 697,355.64 and 504,008.28

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Solution

The fourth proportional to 508,712.76, 697,355.64 and 504,008.28 is: 690,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,712.76 : 697,355.64 = 504,008.28 : x
  2. Step 2: Convert to fraction form
    508,712.76/697,355.64 = 504,008.28/x
  3. Step 3: Cross multiply
    508,712.76x = 697,355.64 × 504,008.28
  4. Step 4: Simplify right side
    508,712.76x = 351,473,016,664.70
  5. Step 5: Solve for x
    x = 351,473,016,664.70/508,712.76
  6. Step 6: Final answer
    x = 690,906.63

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.