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Finding the Fourth Proportional to 677,279.14, 934,674.76 and 405,295.30

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Solution

The fourth proportional to 677,279.14, 934,674.76 and 405,295.30 is: 559,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,279.14 : 934,674.76 = 405,295.30 : x
  2. Step 2: Convert to fraction form
    677,279.14/934,674.76 = 405,295.30/x
  3. Step 3: Cross multiply
    677,279.14x = 934,674.76 × 405,295.30
  4. Step 4: Simplify right side
    677,279.14x = 378,819,287,256.63
  5. Step 5: Solve for x
    x = 378,819,287,256.63/677,279.14
  6. Step 6: Final answer
    x = 559,325.20

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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.