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Finding the Fourth Proportional to 722,843.06, 997,529.28 and 400,558.53

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Solution

The fourth proportional to 722,843.06, 997,529.28 and 400,558.53 is: 552,774.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,843.06 : 997,529.28 = 400,558.53 : x
  2. Step 2: Convert to fraction form
    722,843.06/997,529.28 = 400,558.53/x
  3. Step 3: Cross multiply
    722,843.06x = 997,529.28 × 400,558.53
  4. Step 4: Simplify right side
    722,843.06x = 399,568,864,267.40
  5. Step 5: Solve for x
    x = 399,568,864,267.40/722,843.06
  6. Step 6: Final answer
    x = 552,774.02

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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.