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Finding the Fourth Proportional to 570,854.99, 787,770.87 and 312,729.76

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Solution

The fourth proportional to 570,854.99, 787,770.87 and 312,729.76 is: 431,562.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,854.99 : 787,770.87 = 312,729.76 : x
  2. Step 2: Convert to fraction form
    570,854.99/787,770.87 = 312,729.76/x
  3. Step 3: Cross multiply
    570,854.99x = 787,770.87 × 312,729.76
  4. Step 4: Simplify right side
    570,854.99x = 246,359,394,922.07
  5. Step 5: Solve for x
    x = 246,359,394,922.07/570,854.99
  6. Step 6: Final answer
    x = 431,562.13

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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.