Home / 658,831.60-989,822.04-422,635.60

Finding the Fourth Proportional to 658,831.60, 989,822.04 and 422,635.60

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Solution

The fourth proportional to 658,831.60, 989,822.04 and 422,635.60 is: 634,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,831.60 : 989,822.04 = 422,635.60 : x
  2. Step 2: Convert to fraction form
    658,831.60/989,822.04 = 422,635.60/x
  3. Step 3: Cross multiply
    658,831.60x = 989,822.04 × 422,635.60
  4. Step 4: Simplify right side
    658,831.60x = 418,334,031,768.62
  5. Step 5: Solve for x
    x = 418,334,031,768.62/658,831.60
  6. Step 6: Final answer
    x = 634,963.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.