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Finding the Fourth Proportional to 722,693.70, 997,325.33 and 400,408.88

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Solution

The fourth proportional to 722,693.70, 997,325.33 and 400,408.88 is: 552,568.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,693.70 : 997,325.33 = 400,408.88 : x
  2. Step 2: Convert to fraction form
    722,693.70/997,325.33 = 400,408.88/x
  3. Step 3: Cross multiply
    722,693.70x = 997,325.33 × 400,408.88
  4. Step 4: Simplify right side
    722,693.70x = 399,337,911,392.26
  5. Step 5: Solve for x
    x = 399,337,911,392.26/722,693.70
  6. Step 6: Final answer
    x = 552,568.69

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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.