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Finding the Fourth Proportional to 671,096.77, 925,807.26 and 399,009.81

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Solution

The fourth proportional to 671,096.77, 925,807.26 and 399,009.81 is: 550,451.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,096.77 : 925,807.26 = 399,009.81 : x
  2. Step 2: Convert to fraction form
    671,096.77/925,807.26 = 399,009.81/x
  3. Step 3: Cross multiply
    671,096.77x = 925,807.26 × 399,009.81
  4. Step 4: Simplify right side
    671,096.77x = 369,406,183,877.29
  5. Step 5: Solve for x
    x = 369,406,183,877.29/671,096.77
  6. Step 6: Final answer
    x = 550,451.44

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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.