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Finding the Fourth Proportional to 723,916.98, 998,994.06 and 397,232.64

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Solution

The fourth proportional to 723,916.98, 998,994.06 and 397,232.64 is: 548,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,916.98 : 998,994.06 = 397,232.64 : x
  2. Step 2: Convert to fraction form
    723,916.98/998,994.06 = 397,232.64/x
  3. Step 3: Cross multiply
    723,916.98x = 998,994.06 × 397,232.64
  4. Step 4: Simplify right side
    723,916.98x = 396,833,047,798.12
  5. Step 5: Solve for x
    x = 396,833,047,798.12/723,916.98
  6. Step 6: Final answer
    x = 548,174.80

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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.