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Finding the Fourth Proportional to 722,777.40, 997,431.84 and 400,508.37

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Solution

The fourth proportional to 722,777.40, 997,431.84 and 400,508.37 is: 552,701.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,777.40 : 997,431.84 = 400,508.37 : x
  2. Step 2: Convert to fraction form
    722,777.40/997,431.84 = 400,508.37/x
  3. Step 3: Cross multiply
    722,777.40x = 997,431.84 × 400,508.37
  4. Step 4: Simplify right side
    722,777.40x = 399,479,800,424.50
  5. Step 5: Solve for x
    x = 399,479,800,424.50/722,777.40
  6. Step 6: Final answer
    x = 552,701.01

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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.