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Finding the Fourth Proportional to 692,926, 956,237.94 and 391,139.44

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Solution

The fourth proportional to 692,926, 956,237.94 and 391,139.44 is: 539,772.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,926 : 956,237.94 = 391,139.44 : x
  2. Step 2: Convert to fraction form
    692,926/956,237.94 = 391,139.44/x
  3. Step 3: Cross multiply
    692,926x = 956,237.94 × 391,139.44
  4. Step 4: Simplify right side
    692,926x = 374,022,372,358.35
  5. Step 5: Solve for x
    x = 374,022,372,358.35/692,926
  6. Step 6: Final answer
    x = 539,772.46

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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.