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Finding the Fourth Proportional to 722,900.24, 997,642.28 and 400,603.60

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Solution

The fourth proportional to 722,900.24, 997,642.28 and 400,603.60 is: 552,855.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,900.24 : 997,642.28 = 400,603.60 : x
  2. Step 2: Convert to fraction form
    722,900.24/997,642.28 = 400,603.60/x
  3. Step 3: Cross multiply
    722,900.24x = 997,642.28 × 400,603.60
  4. Step 4: Simplify right side
    722,900.24x = 399,659,088,880.21
  5. Step 5: Solve for x
    x = 399,659,088,880.21/722,900.24
  6. Step 6: Final answer
    x = 552,855.11

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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.