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Finding the Fourth Proportional to 570,279.80, 786,932.81 and 340,791.55

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Solution

The fourth proportional to 570,279.80, 786,932.81 and 340,791.55 is: 470,260.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,279.80 : 786,932.81 = 340,791.55 : x
  2. Step 2: Convert to fraction form
    570,279.80/786,932.81 = 340,791.55/x
  3. Step 3: Cross multiply
    570,279.80x = 786,932.81 × 340,791.55
  4. Step 4: Simplify right side
    570,279.80x = 268,180,046,427.13
  5. Step 5: Solve for x
    x = 268,180,046,427.13/570,279.80
  6. Step 6: Final answer
    x = 470,260.47

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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.