Home / 710,421.12-1,065,729.60-331,146.72

Finding the Fourth Proportional to 710,421.12, 1,065,729.60 and 331,146.72

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Solution

The fourth proportional to 710,421.12, 1,065,729.60 and 331,146.72 is: 496,765.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,421.12 : 1,065,729.60 = 331,146.72 : x
  2. Step 2: Convert to fraction form
    710,421.12/1,065,729.60 = 331,146.72/x
  3. Step 3: Cross multiply
    710,421.12x = 1,065,729.60 × 331,146.72
  4. Step 4: Simplify right side
    710,421.12x = 352,912,861,446.91
  5. Step 5: Solve for x
    x = 352,912,861,446.91/710,421.12
  6. Step 6: Final answer
    x = 496,765.72

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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.