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Finding the Fourth Proportional to 572,729.10, 859,093.65 and 319,749.90

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Solution

The fourth proportional to 572,729.10, 859,093.65 and 319,749.90 is: 479,624.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,729.10 : 859,093.65 = 319,749.90 : x
  2. Step 2: Convert to fraction form
    572,729.10/859,093.65 = 319,749.90/x
  3. Step 3: Cross multiply
    572,729.10x = 859,093.65 × 319,749.90
  4. Step 4: Simplify right side
    572,729.10x = 274,695,108,678.14
  5. Step 5: Solve for x
    x = 274,695,108,678.14/572,729.10
  6. Step 6: Final answer
    x = 479,624.85

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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.