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Finding the Fourth Proportional to 886,842.40, 1,330,263.60 and 512,672.80

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Solution

The fourth proportional to 886,842.40, 1,330,263.60 and 512,672.80 is: 769,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,842.40 : 1,330,263.60 = 512,672.80 : x
  2. Step 2: Convert to fraction form
    886,842.40/1,330,263.60 = 512,672.80/x
  3. Step 3: Cross multiply
    886,842.40x = 1,330,263.60 × 512,672.80
  4. Step 4: Simplify right side
    886,842.40x = 681,989,964,550.08
  5. Step 5: Solve for x
    x = 681,989,964,550.08/886,842.40
  6. Step 6: Final answer
    x = 769,009.20

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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.