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Finding the Fourth Proportional to 572,630.70, 858,211.65 and 319,910.70

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Solution

The fourth proportional to 572,630.70, 858,211.65 and 319,910.70 is: 479,455.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,630.70 : 858,211.65 = 319,910.70 : x
  2. Step 2: Convert to fraction form
    572,630.70/858,211.65 = 319,910.70/x
  3. Step 3: Cross multiply
    572,630.70x = 858,211.65 × 319,910.70
  4. Step 4: Simplify right side
    572,630.70x = 274,551,089,699.66
  5. Step 5: Solve for x
    x = 274,551,089,699.66/572,630.70
  6. Step 6: Final answer
    x = 479,455.76

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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.