Home / 689,112.48-950,899.11-413,455.68

Finding the Fourth Proportional to 689,112.48, 950,899.11 and 413,455.68

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Solution

The fourth proportional to 689,112.48, 950,899.11 and 413,455.68 is: 570,523.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,112.48 : 950,899.11 = 413,455.68 : x
  2. Step 2: Convert to fraction form
    689,112.48/950,899.11 = 413,455.68/x
  3. Step 3: Cross multiply
    689,112.48x = 950,899.11 × 413,455.68
  4. Step 4: Simplify right side
    689,112.48x = 393,154,638,136.45
  5. Step 5: Solve for x
    x = 393,154,638,136.45/689,112.48
  6. Step 6: Final answer
    x = 570,523.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.