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Finding the Fourth Proportional to 550,379.15, 758,820.12 and 356,444.18

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Solution

The fourth proportional to 550,379.15, 758,820.12 and 356,444.18 is: 491,437.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,379.15 : 758,820.12 = 356,444.18 : x
  2. Step 2: Convert to fraction form
    550,379.15/758,820.12 = 356,444.18/x
  3. Step 3: Cross multiply
    550,379.15x = 758,820.12 × 356,444.18
  4. Step 4: Simplify right side
    550,379.15x = 270,477,015,440.90
  5. Step 5: Solve for x
    x = 270,477,015,440.90/550,379.15
  6. Step 6: Final answer
    x = 491,437.61

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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.