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Finding the Fourth Proportional to 550,373.18, 758,811.90 and 356,438.22

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Solution

The fourth proportional to 550,373.18, 758,811.90 and 356,438.22 is: 491,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,373.18 : 758,811.90 = 356,438.22 : x
  2. Step 2: Convert to fraction form
    550,373.18/758,811.90 = 356,438.22/x
  3. Step 3: Cross multiply
    550,373.18x = 758,811.90 × 356,438.22
  4. Step 4: Simplify right side
    550,373.18x = 270,469,563,705.27
  5. Step 5: Solve for x
    x = 270,469,563,705.27/550,373.18
  6. Step 6: Final answer
    x = 491,429.40

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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.