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Finding the Fourth Proportional to 628,865.48, 867,927.48 and 370,789.76

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Solution

The fourth proportional to 628,865.48, 867,927.48 and 370,789.76 is: 511,744.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,865.48 : 867,927.48 = 370,789.76 : x
  2. Step 2: Convert to fraction form
    628,865.48/867,927.48 = 370,789.76/x
  3. Step 3: Cross multiply
    628,865.48x = 867,927.48 × 370,789.76
  4. Step 4: Simplify right side
    628,865.48x = 321,818,622,006.61
  5. Step 5: Solve for x
    x = 321,818,622,006.61/628,865.48
  6. Step 6: Final answer
    x = 511,744.77

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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.