Home / 689,416.20-1,034,124.30-512,269.20

Finding the Fourth Proportional to 689,416.20, 1,034,124.30 and 512,269.20

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Solution

The fourth proportional to 689,416.20, 1,034,124.30 and 512,269.20 is: 768,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,416.20 : 1,034,124.30 = 512,269.20 : x
  2. Step 2: Convert to fraction form
    689,416.20/1,034,124.30 = 512,269.20/x
  3. Step 3: Cross multiply
    689,416.20x = 1,034,124.30 × 512,269.20
  4. Step 4: Simplify right side
    689,416.20x = 529,750,027,861.56
  5. Step 5: Solve for x
    x = 529,750,027,861.56/689,416.20
  6. Step 6: Final answer
    x = 768,403.80

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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.