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Finding the Fourth Proportional to 570,253.15, 786,866.97 and 315,603.73

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Solution

The fourth proportional to 570,253.15, 786,866.97 and 315,603.73 is: 435,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,253.15 : 786,866.97 = 315,603.73 : x
  2. Step 2: Convert to fraction form
    570,253.15/786,866.97 = 315,603.73/x
  3. Step 3: Cross multiply
    570,253.15x = 786,866.97 × 315,603.73
  4. Step 4: Simplify right side
    570,253.15x = 248,338,150,745.80
  5. Step 5: Solve for x
    x = 248,338,150,745.80/570,253.15
  6. Step 6: Final answer
    x = 435,487.56

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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.