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Finding the Fourth Proportional to 530,624.40, 794,770.20 and 319,894.80

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Solution

The fourth proportional to 530,624.40, 794,770.20 and 319,894.80 is: 479,139.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,624.40 : 794,770.20 = 319,894.80 : x
  2. Step 2: Convert to fraction form
    530,624.40/794,770.20 = 319,894.80/x
  3. Step 3: Cross multiply
    530,624.40x = 794,770.20 × 319,894.80
  4. Step 4: Simplify right side
    530,624.40x = 254,242,854,174.96
  5. Step 5: Solve for x
    x = 254,242,854,174.96/530,624.40
  6. Step 6: Final answer
    x = 479,139.02

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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.