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Finding the Fourth Proportional to 621,813.20, 932,028.60 and 266,766.80

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Solution

The fourth proportional to 621,813.20, 932,028.60 and 266,766.80 is: 399,853.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,813.20 : 932,028.60 = 266,766.80 : x
  2. Step 2: Convert to fraction form
    621,813.20/932,028.60 = 266,766.80/x
  3. Step 3: Cross multiply
    621,813.20x = 932,028.60 × 266,766.80
  4. Step 4: Simplify right side
    621,813.20x = 248,634,287,130.48
  5. Step 5: Solve for x
    x = 248,634,287,130.48/621,813.20
  6. Step 6: Final answer
    x = 399,853.67

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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.