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Finding the Fourth Proportional to 722,809.69, 997,499.24 and 400,489.63

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Solution

The fourth proportional to 722,809.69, 997,499.24 and 400,489.63 is: 552,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,809.69 : 997,499.24 = 400,489.63 : x
  2. Step 2: Convert to fraction form
    722,809.69/997,499.24 = 400,489.63/x
  3. Step 3: Cross multiply
    722,809.69x = 997,499.24 × 400,489.63
  4. Step 4: Simplify right side
    722,809.69x = 399,488,099,550.43
  5. Step 5: Solve for x
    x = 399,488,099,550.43/722,809.69
  6. Step 6: Final answer
    x = 552,687.80

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1.5x scale

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.