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Finding the Fourth Proportional to 697,470.72, 962,261.79 and 455,892.54

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Solution

The fourth proportional to 697,470.72, 962,261.79 and 455,892.54 is: 628,969.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,470.72 : 962,261.79 = 455,892.54 : x
  2. Step 2: Convert to fraction form
    697,470.72/962,261.79 = 455,892.54/x
  3. Step 3: Cross multiply
    697,470.72x = 962,261.79 × 455,892.54
  4. Step 4: Simplify right side
    697,470.72x = 438,687,971,588.05
  5. Step 5: Solve for x
    x = 438,687,971,588.05/697,470.72
  6. Step 6: Final answer
    x = 628,969.73

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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.