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Finding the Fourth Proportional to 722,599.05, 997,247.93 and 400,410.21

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Solution

The fourth proportional to 722,599.05, 997,247.93 and 400,410.21 is: 552,600.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,599.05 : 997,247.93 = 400,410.21 : x
  2. Step 2: Convert to fraction form
    722,599.05/997,247.93 = 400,410.21/x
  3. Step 3: Cross multiply
    722,599.05x = 997,247.93 × 400,410.21
  4. Step 4: Simplify right side
    722,599.05x = 399,308,251,071.31
  5. Step 5: Solve for x
    x = 399,308,251,071.31/722,599.05
  6. Step 6: Final answer
    x = 552,600.02

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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.