Home / 640,664.18-883,905.26-411,349.94

Finding the Fourth Proportional to 640,664.18, 883,905.26 and 411,349.94

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Solution

The fourth proportional to 640,664.18, 883,905.26 and 411,349.94 is: 567,527.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,664.18 : 883,905.26 = 411,349.94 : x
  2. Step 2: Convert to fraction form
    640,664.18/883,905.26 = 411,349.94/x
  3. Step 3: Cross multiply
    640,664.18x = 883,905.26 × 411,349.94
  4. Step 4: Simplify right side
    640,664.18x = 363,594,375,666.68
  5. Step 5: Solve for x
    x = 363,594,375,666.68/640,664.18
  6. Step 6: Final answer
    x = 567,527.24

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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.