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Finding the Fourth Proportional to 809,676, 1,117,451.30 and 470,144.25

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Solution

The fourth proportional to 809,676, 1,117,451.30 and 470,144.25 is: 648,856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,676 : 1,117,451.30 = 470,144.25 : x
  2. Step 2: Convert to fraction form
    809,676/1,117,451.30 = 470,144.25/x
  3. Step 3: Cross multiply
    809,676x = 1,117,451.30 × 470,144.25
  4. Step 4: Simplify right side
    809,676x = 525,363,300,999.30
  5. Step 5: Solve for x
    x = 525,363,300,999.30/809,676
  6. Step 6: Final answer
    x = 648,856.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.