Home / 714,258.09-985,683.60-391,989.06

Finding the Fourth Proportional to 714,258.09, 985,683.60 and 391,989.06

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Solution

The fourth proportional to 714,258.09, 985,683.60 and 391,989.06 is: 540,948.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,258.09 : 985,683.60 = 391,989.06 : x
  2. Step 2: Convert to fraction form
    714,258.09/985,683.60 = 391,989.06/x
  3. Step 3: Cross multiply
    714,258.09x = 985,683.60 × 391,989.06
  4. Step 4: Simplify right side
    714,258.09x = 386,377,187,821.42
  5. Step 5: Solve for x
    x = 386,377,187,821.42/714,258.09
  6. Step 6: Final answer
    x = 540,948.98

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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.