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Finding the Fourth Proportional to 458,577.80, 687,244.60 and 258,799.40

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Solution

The fourth proportional to 458,577.80, 687,244.60 and 258,799.40 is: 387,848.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,577.80 : 687,244.60 = 258,799.40 : x
  2. Step 2: Convert to fraction form
    458,577.80/687,244.60 = 258,799.40/x
  3. Step 3: Cross multiply
    458,577.80x = 687,244.60 × 258,799.40
  4. Step 4: Simplify right side
    458,577.80x = 177,858,490,133.24
  5. Step 5: Solve for x
    x = 177,858,490,133.24/458,577.80
  6. Step 6: Final answer
    x = 387,848.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.