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Finding the Fourth Proportional to 447,788.80, 671,683.20 and 443,641.60

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Solution

The fourth proportional to 447,788.80, 671,683.20 and 443,641.60 is: 665,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,788.80 : 671,683.20 = 443,641.60 : x
  2. Step 2: Convert to fraction form
    447,788.80/671,683.20 = 443,641.60/x
  3. Step 3: Cross multiply
    447,788.80x = 671,683.20 × 443,641.60
  4. Step 4: Simplify right side
    447,788.80x = 297,986,609,541.12
  5. Step 5: Solve for x
    x = 297,986,609,541.12/447,788.80
  6. Step 6: Final answer
    x = 665,462.40

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Similar ratio
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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.