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Finding the Fourth Proportional to 620,329.79, 930,558.78 and 171,050.74

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Solution

The fourth proportional to 620,329.79, 930,558.78 and 171,050.74 is: 256,593.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,329.79 : 930,558.78 = 171,050.74 : x
  2. Step 2: Convert to fraction form
    620,329.79/930,558.78 = 171,050.74/x
  3. Step 3: Cross multiply
    620,329.79x = 930,558.78 × 171,050.74
  4. Step 4: Simplify right side
    620,329.79x = 159,172,765,606.10
  5. Step 5: Solve for x
    x = 159,172,765,606.10/620,329.79
  6. Step 6: Final answer
    x = 256,593.78

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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.