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Finding the Fourth Proportional to 570,143.08, 786,813.78 and 315,517.96

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Solution

The fourth proportional to 570,143.08, 786,813.78 and 315,517.96 is: 435,423.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,143.08 : 786,813.78 = 315,517.96 : x
  2. Step 2: Convert to fraction form
    570,143.08/786,813.78 = 315,517.96/x
  3. Step 3: Cross multiply
    570,143.08x = 786,813.78 × 315,517.96
  4. Step 4: Simplify right side
    570,143.08x = 248,253,878,765.49
  5. Step 5: Solve for x
    x = 248,253,878,765.49/570,143.08
  6. Step 6: Final answer
    x = 435,423.82

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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.