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Finding the Fourth Proportional to 977,369.73, 1,347,970.50 and 687,939.41

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Solution

The fourth proportional to 977,369.73, 1,347,970.50 and 687,939.41 is: 948,793.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,369.73 : 1,347,970.50 = 687,939.41 : x
  2. Step 2: Convert to fraction form
    977,369.73/1,347,970.50 = 687,939.41/x
  3. Step 3: Cross multiply
    977,369.73x = 1,347,970.50 × 687,939.41
  4. Step 4: Simplify right side
    977,369.73x = 927,322,033,837.33
  5. Step 5: Solve for x
    x = 927,322,033,837.33/977,369.73
  6. Step 6: Final answer
    x = 948,793.49

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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.