Home / 826,500.11-1,240,416.59-427,254.75

Finding the Fourth Proportional to 826,500.11, 1,240,416.59 and 427,254.75

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Solution

The fourth proportional to 826,500.11, 1,240,416.59 and 427,254.75 is: 641,226.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,500.11 : 1,240,416.59 = 427,254.75 : x
  2. Step 2: Convert to fraction form
    826,500.11/1,240,416.59 = 427,254.75/x
  3. Step 3: Cross multiply
    826,500.11x = 1,240,416.59 × 427,254.75
  4. Step 4: Simplify right side
    826,500.11x = 529,973,877,920.03
  5. Step 5: Solve for x
    x = 529,973,877,920.03/826,500.11
  6. Step 6: Final answer
    x = 641,226.63

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Double scale
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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.