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Finding the Fourth Proportional to 879,898.64, 1,214,250.36 and 492,717.56

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Solution

The fourth proportional to 879,898.64, 1,214,250.36 and 492,717.56 is: 679,944.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,898.64 : 1,214,250.36 = 492,717.56 : x
  2. Step 2: Convert to fraction form
    879,898.64/1,214,250.36 = 492,717.56/x
  3. Step 3: Cross multiply
    879,898.64x = 1,214,250.36 × 492,717.56
  4. Step 4: Simplify right side
    879,898.64x = 598,282,474,608.32
  5. Step 5: Solve for x
    x = 598,282,474,608.32/879,898.64
  6. Step 6: Final answer
    x = 679,944.77

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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.