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Finding the Fourth Proportional to 481,757.60, 721,858.80 and 402,442.40

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Solution

The fourth proportional to 481,757.60, 721,858.80 and 402,442.40 is: 603,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,757.60 : 721,858.80 = 402,442.40 : x
  2. Step 2: Convert to fraction form
    481,757.60/721,858.80 = 402,442.40/x
  3. Step 3: Cross multiply
    481,757.60x = 721,858.80 × 402,442.40
  4. Step 4: Simplify right side
    481,757.60x = 290,506,587,933.12
  5. Step 5: Solve for x
    x = 290,506,587,933.12/481,757.60
  6. Step 6: Final answer
    x = 603,014.02

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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.