Home / 640,484.82-883,869.21-354,004.92

Finding the Fourth Proportional to 640,484.82, 883,869.21 and 354,004.92

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Solution

The fourth proportional to 640,484.82, 883,869.21 and 354,004.92 is: 488,526.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,484.82 : 883,869.21 = 354,004.92 : x
  2. Step 2: Convert to fraction form
    640,484.82/883,869.21 = 354,004.92/x
  3. Step 3: Cross multiply
    640,484.82x = 883,869.21 × 354,004.92
  4. Step 4: Simplify right side
    640,484.82x = 312,894,048,976.51
  5. Step 5: Solve for x
    x = 312,894,048,976.51/640,484.82
  6. Step 6: Final answer
    x = 488,526.88

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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.