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Finding the Fourth Proportional to 916,941.60, 1,375,412.40 and 443,674.80

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Solution

The fourth proportional to 916,941.60, 1,375,412.40 and 443,674.80 is: 665,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,941.60 : 1,375,412.40 = 443,674.80 : x
  2. Step 2: Convert to fraction form
    916,941.60/1,375,412.40 = 443,674.80/x
  3. Step 3: Cross multiply
    916,941.60x = 1,375,412.40 × 443,674.80
  4. Step 4: Simplify right side
    916,941.60x = 610,235,821,487.52
  5. Step 5: Solve for x
    x = 610,235,821,487.52/916,941.60
  6. Step 6: Final answer
    x = 665,512.20

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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.