Home / 642,472.03-886,598.18-355,989.61

Finding the Fourth Proportional to 642,472.03, 886,598.18 and 355,989.61

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Solution

The fourth proportional to 642,472.03, 886,598.18 and 355,989.61 is: 491,258.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,472.03 : 886,598.18 = 355,989.61 : x
  2. Step 2: Convert to fraction form
    642,472.03/886,598.18 = 355,989.61/x
  3. Step 3: Cross multiply
    642,472.03x = 886,598.18 × 355,989.61
  4. Step 4: Simplify right side
    642,472.03x = 315,619,736,328.47
  5. Step 5: Solve for x
    x = 315,619,736,328.47/642,472.03
  6. Step 6: Final answer
    x = 491,258.33

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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.