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Finding the Fourth Proportional to 556,712.06, 768,242.04 and 302,057.78

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Solution

The fourth proportional to 556,712.06, 768,242.04 and 302,057.78 is: 416,828.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,712.06 : 768,242.04 = 302,057.78 : x
  2. Step 2: Convert to fraction form
    556,712.06/768,242.04 = 302,057.78/x
  3. Step 3: Cross multiply
    556,712.06x = 768,242.04 × 302,057.78
  4. Step 4: Simplify right side
    556,712.06x = 232,053,485,105.07
  5. Step 5: Solve for x
    x = 232,053,485,105.07/556,712.06
  6. Step 6: Final answer
    x = 416,828.56

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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.