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Finding the Fourth Proportional to 669,611.80, 1,004,417.70 and 403,672.60

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Solution

The fourth proportional to 669,611.80, 1,004,417.70 and 403,672.60 is: 605,508.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,611.80 : 1,004,417.70 = 403,672.60 : x
  2. Step 2: Convert to fraction form
    669,611.80/1,004,417.70 = 403,672.60/x
  3. Step 3: Cross multiply
    669,611.80x = 1,004,417.70 × 403,672.60
  4. Step 4: Simplify right side
    669,611.80x = 405,455,904,445.02
  5. Step 5: Solve for x
    x = 405,455,904,445.02/669,611.80
  6. Step 6: Final answer
    x = 605,508.90

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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.