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Finding the Fourth Proportional to 433,810.60, 650,715.90 and 389,633.20

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Solution

The fourth proportional to 433,810.60, 650,715.90 and 389,633.20 is: 584,449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,810.60 : 650,715.90 = 389,633.20 : x
  2. Step 2: Convert to fraction form
    433,810.60/650,715.90 = 389,633.20/x
  3. Step 3: Cross multiply
    433,810.60x = 650,715.90 × 389,633.20
  4. Step 4: Simplify right side
    433,810.60x = 253,540,518,407.88
  5. Step 5: Solve for x
    x = 253,540,518,407.88/433,810.60
  6. Step 6: Final answer
    x = 584,449.80

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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.