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Finding the Fourth Proportional to 587,438.40, 880,466.40 and 306,811.20

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Solution

The fourth proportional to 587,438.40, 880,466.40 and 306,811.20 is: 459,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,438.40 : 880,466.40 = 306,811.20 : x
  2. Step 2: Convert to fraction form
    587,438.40/880,466.40 = 306,811.20/x
  3. Step 3: Cross multiply
    587,438.40x = 880,466.40 × 306,811.20
  4. Step 4: Simplify right side
    587,438.40x = 270,136,952,743.68
  5. Step 5: Solve for x
    x = 270,136,952,743.68/587,438.40
  6. Step 6: Final answer
    x = 459,855.80

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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.