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Finding the Fourth Proportional to 898,441.64, 1,239,832.84 and 511,248.48

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Solution

The fourth proportional to 898,441.64, 1,239,832.84 and 511,248.48 is: 705,513.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,441.64 : 1,239,832.84 = 511,248.48 : x
  2. Step 2: Convert to fraction form
    898,441.64/1,239,832.84 = 511,248.48/x
  3. Step 3: Cross multiply
    898,441.64x = 1,239,832.84 × 511,248.48
  4. Step 4: Simplify right side
    898,441.64x = 633,862,653,625.96
  5. Step 5: Solve for x
    x = 633,862,653,625.96/898,441.64
  6. Step 6: Final answer
    x = 705,513.44

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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.