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Finding the Fourth Proportional to 500,840.60, 691,156.06 and 274,485.56

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Solution

The fourth proportional to 500,840.60, 691,156.06 and 274,485.56 is: 378,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,840.60 : 691,156.06 = 274,485.56 : x
  2. Step 2: Convert to fraction form
    500,840.60/691,156.06 = 274,485.56/x
  3. Step 3: Cross multiply
    500,840.60x = 691,156.06 × 274,485.56
  4. Step 4: Simplify right side
    500,840.60x = 189,712,358,176.49
  5. Step 5: Solve for x
    x = 189,712,358,176.49/500,840.60
  6. Step 6: Final answer
    x = 378,787.90

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1.5x scale

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.