Home / 498,734.70-688,258.29-283,888.60

Finding the Fourth Proportional to 498,734.70, 688,258.29 and 283,888.60

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Solution

The fourth proportional to 498,734.70, 688,258.29 and 283,888.60 is: 391,768.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,734.70 : 688,258.29 = 283,888.60 : x
  2. Step 2: Convert to fraction form
    498,734.70/688,258.29 = 283,888.60/x
  3. Step 3: Cross multiply
    498,734.70x = 688,258.29 × 283,888.60
  4. Step 4: Simplify right side
    498,734.70x = 195,388,679,601.27
  5. Step 5: Solve for x
    x = 195,388,679,601.27/498,734.70
  6. Step 6: Final answer
    x = 391,768.77

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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.