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Finding the Fourth Proportional to 609,900.10, 915,368.55 and 491,704.90

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Solution

The fourth proportional to 609,900.10, 915,368.55 and 491,704.90 is: 737,975.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,900.10 : 915,368.55 = 491,704.90 : x
  2. Step 2: Convert to fraction form
    609,900.10/915,368.55 = 491,704.90/x
  3. Step 3: Cross multiply
    609,900.10x = 915,368.55 × 491,704.90
  4. Step 4: Simplify right side
    609,900.10x = 450,091,201,340.90
  5. Step 5: Solve for x
    x = 450,091,201,340.90/609,900.10
  6. Step 6: Final answer
    x = 737,975.29

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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.