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Finding the Fourth Proportional to 413,575.60, 620,363.40 and 345,924.40

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Solution

The fourth proportional to 413,575.60, 620,363.40 and 345,924.40 is: 518,886.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,575.60 : 620,363.40 = 345,924.40 : x
  2. Step 2: Convert to fraction form
    413,575.60/620,363.40 = 345,924.40/x
  3. Step 3: Cross multiply
    413,575.60x = 620,363.40 × 345,924.40
  4. Step 4: Simplify right side
    413,575.60x = 214,598,836,926.96
  5. Step 5: Solve for x
    x = 214,598,836,926.96/413,575.60
  6. Step 6: Final answer
    x = 518,886.60

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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.