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Finding the Fourth Proportional to 722,697.45, 997,330.50 and 400,412.63

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Solution

The fourth proportional to 722,697.45, 997,330.50 and 400,412.63 is: 552,573.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,697.45 : 997,330.50 = 400,412.63 : x
  2. Step 2: Convert to fraction form
    722,697.45/997,330.50 = 400,412.63/x
  3. Step 3: Cross multiply
    722,697.45x = 997,330.50 × 400,412.63
  4. Step 4: Simplify right side
    722,697.45x = 399,343,723,497.56
  5. Step 5: Solve for x
    x = 399,343,723,497.56/722,697.45
  6. Step 6: Final answer
    x = 552,573.87

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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.