Home / 640,104.96-882,374.40-424,865.28

Finding the Fourth Proportional to 640,104.96, 882,374.40 and 424,865.28

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Solution

The fourth proportional to 640,104.96, 882,374.40 and 424,865.28 is: 585,669.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,104.96 : 882,374.40 = 424,865.28 : x
  2. Step 2: Convert to fraction form
    640,104.96/882,374.40 = 424,865.28/x
  3. Step 3: Cross multiply
    640,104.96x = 882,374.40 × 424,865.28
  4. Step 4: Simplify right side
    640,104.96x = 374,890,246,520.83
  5. Step 5: Solve for x
    x = 374,890,246,520.83/640,104.96
  6. Step 6: Final answer
    x = 585,669.96

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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.