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Finding the Fourth Proportional to 415,905.80, 620,850.13 and 365,460.60

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Solution

The fourth proportional to 415,905.80, 620,850.13 and 365,460.60 is: 545,547.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,905.80 : 620,850.13 = 365,460.60 : x
  2. Step 2: Convert to fraction form
    415,905.80/620,850.13 = 365,460.60/x
  3. Step 3: Cross multiply
    415,905.80x = 620,850.13 × 365,460.60
  4. Step 4: Simplify right side
    415,905.80x = 226,896,261,019.88
  5. Step 5: Solve for x
    x = 226,896,261,019.88/415,905.80
  6. Step 6: Final answer
    x = 545,547.24

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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.