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Finding the Fourth Proportional to 415,913.60, 622,995.60 and 345,929.60

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Solution

The fourth proportional to 415,913.60, 622,995.60 and 345,929.60 is: 518,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,913.60 : 622,995.60 = 345,929.60 : x
  2. Step 2: Convert to fraction form
    415,913.60/622,995.60 = 345,929.60/x
  3. Step 3: Cross multiply
    415,913.60x = 622,995.60 × 345,929.60
  4. Step 4: Simplify right side
    415,913.60x = 215,512,618,709.76
  5. Step 5: Solve for x
    x = 215,512,618,709.76/415,913.60
  6. Step 6: Final answer
    x = 518,166.80

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1.5x scale

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.