Home / 642,203.96-886,270.64-355,724.01

Finding the Fourth Proportional to 642,203.96, 886,270.64 and 355,724.01

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Solution

The fourth proportional to 642,203.96, 886,270.64 and 355,724.01 is: 490,915.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,203.96 : 886,270.64 = 355,724.01 : x
  2. Step 2: Convert to fraction form
    642,203.96/886,270.64 = 355,724.01/x
  3. Step 3: Cross multiply
    642,203.96x = 886,270.64 × 355,724.01
  4. Step 4: Simplify right side
    642,203.96x = 315,267,746,006.07
  5. Step 5: Solve for x
    x = 315,267,746,006.07/642,203.96
  6. Step 6: Final answer
    x = 490,915.29

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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.