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Finding the Fourth Proportional to 692,093.77, 955,155.31 and 420,099.28

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Solution

The fourth proportional to 692,093.77, 955,155.31 and 420,099.28 is: 579,777.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,093.77 : 955,155.31 = 420,099.28 : x
  2. Step 2: Convert to fraction form
    692,093.77/955,155.31 = 420,099.28/x
  3. Step 3: Cross multiply
    692,093.77x = 955,155.31 × 420,099.28
  4. Step 4: Simplify right side
    692,093.77x = 401,260,054,581.04
  5. Step 5: Solve for x
    x = 401,260,054,581.04/692,093.77
  6. Step 6: Final answer
    x = 579,777.01

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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.