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Finding the Fourth Proportional to 558,465.50, 770,624.07 and 316,670.78

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Solution

The fourth proportional to 558,465.50, 770,624.07 and 316,670.78 is: 436,972.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,465.50 : 770,624.07 = 316,670.78 : x
  2. Step 2: Convert to fraction form
    558,465.50/770,624.07 = 316,670.78/x
  3. Step 3: Cross multiply
    558,465.50x = 770,624.07 × 316,670.78
  4. Step 4: Simplify right side
    558,465.50x = 244,034,125,333.68
  5. Step 5: Solve for x
    x = 244,034,125,333.68/558,465.50
  6. Step 6: Final answer
    x = 436,972.61

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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.