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Finding the Fourth Proportional to 458,245.80, 687,368.70 and 325,276.20

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Solution

The fourth proportional to 458,245.80, 687,368.70 and 325,276.20 is: 487,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,245.80 : 687,368.70 = 325,276.20 : x
  2. Step 2: Convert to fraction form
    458,245.80/687,368.70 = 325,276.20/x
  3. Step 3: Cross multiply
    458,245.80x = 687,368.70 × 325,276.20
  4. Step 4: Simplify right side
    458,245.80x = 223,584,678,734.94
  5. Step 5: Solve for x
    x = 223,584,678,734.94/458,245.80
  6. Step 6: Final answer
    x = 487,914.30

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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.