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Finding the Fourth Proportional to 556,930.86, 768,485.79 and 330,666.54

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Solution

The fourth proportional to 556,930.86, 768,485.79 and 330,666.54 is: 456,273.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,930.86 : 768,485.79 = 330,666.54 : x
  2. Step 2: Convert to fraction form
    556,930.86/768,485.79 = 330,666.54/x
  3. Step 3: Cross multiply
    556,930.86x = 768,485.79 × 330,666.54
  4. Step 4: Simplify right side
    556,930.86x = 254,112,537,218.47
  5. Step 5: Solve for x
    x = 254,112,537,218.47/556,930.86
  6. Step 6: Final answer
    x = 456,273.04

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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.