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Finding the Fourth Proportional to 638,145.60, 956,757.60 and 357,748.80

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Solution

The fourth proportional to 638,145.60, 956,757.60 and 357,748.80 is: 536,364.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,145.60 : 956,757.60 = 357,748.80 : x
  2. Step 2: Convert to fraction form
    638,145.60/956,757.60 = 357,748.80/x
  3. Step 3: Cross multiply
    638,145.60x = 956,757.60 × 357,748.80
  4. Step 4: Simplify right side
    638,145.60x = 342,278,883,290.88
  5. Step 5: Solve for x
    x = 342,278,883,290.88/638,145.60
  6. Step 6: Final answer
    x = 536,364.87

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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.