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Finding the Fourth Proportional to 722,967.40, 997,697.10 and 400,682.80

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Solution

The fourth proportional to 722,967.40, 997,697.10 and 400,682.80 is: 552,943.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,967.40 : 997,697.10 = 400,682.80 : x
  2. Step 2: Convert to fraction form
    722,967.40/997,697.10 = 400,682.80/x
  3. Step 3: Cross multiply
    722,967.40x = 997,697.10 × 400,682.80
  4. Step 4: Simplify right side
    722,967.40x = 399,760,067,579.88
  5. Step 5: Solve for x
    x = 399,760,067,579.88/722,967.40
  6. Step 6: Final answer
    x = 552,943.42

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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.