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Finding the Fourth Proportional to 671,696.20, 1,007,544.30 and 620,374.60

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Solution

The fourth proportional to 671,696.20, 1,007,544.30 and 620,374.60 is: 930,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,696.20 : 1,007,544.30 = 620,374.60 : x
  2. Step 2: Convert to fraction form
    671,696.20/1,007,544.30 = 620,374.60/x
  3. Step 3: Cross multiply
    671,696.20x = 1,007,544.30 × 620,374.60
  4. Step 4: Simplify right side
    671,696.20x = 625,054,892,094.78
  5. Step 5: Solve for x
    x = 625,054,892,094.78/671,696.20
  6. Step 6: Final answer
    x = 930,561.90

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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.