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Finding the Fourth Proportional to 628,471.67, 867,310.50 and 356,551.02

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Solution

The fourth proportional to 628,471.67, 867,310.50 and 356,551.02 is: 492,051.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,471.67 : 867,310.50 = 356,551.02 : x
  2. Step 2: Convert to fraction form
    628,471.67/867,310.50 = 356,551.02/x
  3. Step 3: Cross multiply
    628,471.67x = 867,310.50 × 356,551.02
  4. Step 4: Simplify right side
    628,471.67x = 309,240,443,431.71
  5. Step 5: Solve for x
    x = 309,240,443,431.71/628,471.67
  6. Step 6: Final answer
    x = 492,051.53

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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.