Home / 823,789.40-1,234,128.90-423,066.20

Finding the Fourth Proportional to 823,789.40, 1,234,128.90 and 423,066.20

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Solution

The fourth proportional to 823,789.40, 1,234,128.90 and 423,066.20 is: 633,800.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,789.40 : 1,234,128.90 = 423,066.20 : x
  2. Step 2: Convert to fraction form
    823,789.40/1,234,128.90 = 423,066.20/x
  3. Step 3: Cross multiply
    823,789.40x = 1,234,128.90 × 423,066.20
  4. Step 4: Simplify right side
    823,789.40x = 522,118,224,033.18
  5. Step 5: Solve for x
    x = 522,118,224,033.18/823,789.40
  6. Step 6: Final answer
    x = 633,800.61

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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.