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Finding the Fourth Proportional to 886,807.20, 1,328,751.60 and 512,176.80

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Solution

The fourth proportional to 886,807.20, 1,328,751.60 and 512,176.80 is: 767,422.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,807.20 : 1,328,751.60 = 512,176.80 : x
  2. Step 2: Convert to fraction form
    886,807.20/1,328,751.60 = 512,176.80/x
  3. Step 3: Cross multiply
    886,807.20x = 1,328,751.60 × 512,176.80
  4. Step 4: Simplify right side
    886,807.20x = 680,555,742,482.88
  5. Step 5: Solve for x
    x = 680,555,742,482.88/886,807.20
  6. Step 6: Final answer
    x = 767,422.44

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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.