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Finding the Fourth Proportional to 415,889.78, 620,826.28 and 365,444.60

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Solution

The fourth proportional to 415,889.78, 620,826.28 and 365,444.60 is: 545,523.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,889.78 : 620,826.28 = 365,444.60 : x
  2. Step 2: Convert to fraction form
    415,889.78/620,826.28 = 365,444.60/x
  3. Step 3: Cross multiply
    415,889.78x = 620,826.28 × 365,444.60
  4. Step 4: Simplify right side
    415,889.78x = 226,877,611,564.09
  5. Step 5: Solve for x
    x = 226,877,611,564.09/415,889.78
  6. Step 6: Final answer
    x = 545,523.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.