Home / 640,430.82-883,828.71-368,540.10

Finding the Fourth Proportional to 640,430.82, 883,828.71 and 368,540.10

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Solution

The fourth proportional to 640,430.82, 883,828.71 and 368,540.10 is: 508,605.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,430.82 : 883,828.71 = 368,540.10 : x
  2. Step 2: Convert to fraction form
    640,430.82/883,828.71 = 368,540.10/x
  3. Step 3: Cross multiply
    640,430.82x = 883,828.71 × 368,540.10
  4. Step 4: Simplify right side
    640,430.82x = 325,726,321,166.27
  5. Step 5: Solve for x
    x = 325,726,321,166.27/640,430.82
  6. Step 6: Final answer
    x = 508,605.01

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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.