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Finding the Fourth Proportional to 656,699.30, 985,428.79 and 277,595.51

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Solution

The fourth proportional to 656,699.30, 985,428.79 and 277,595.51 is: 416,553.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,699.30 : 985,428.79 = 277,595.51 : x
  2. Step 2: Convert to fraction form
    656,699.30/985,428.79 = 277,595.51/x
  3. Step 3: Cross multiply
    656,699.30x = 985,428.79 × 277,595.51
  4. Step 4: Simplify right side
    656,699.30x = 273,550,601,907.60
  5. Step 5: Solve for x
    x = 273,550,601,907.60/656,699.30
  6. Step 6: Final answer
    x = 416,553.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.