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Finding the Fourth Proportional to 722,782.62, 997,441.83 and 400,490.10

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Solution

The fourth proportional to 722,782.62, 997,441.83 and 400,490.10 is: 552,677.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,782.62 : 997,441.83 = 400,490.10 : x
  2. Step 2: Convert to fraction form
    722,782.62/997,441.83 = 400,490.10/x
  3. Step 3: Cross multiply
    722,782.62x = 997,441.83 × 400,490.10
  4. Step 4: Simplify right side
    722,782.62x = 399,465,578,240.88
  5. Step 5: Solve for x
    x = 399,465,578,240.88/722,782.62
  6. Step 6: Final answer
    x = 552,677.34

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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.