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Finding the Fourth Proportional to 556,778.69, 768,356.63 and 302,129.87

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Solution

The fourth proportional to 556,778.69, 768,356.63 and 302,129.87 is: 416,940.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,778.69 : 768,356.63 = 302,129.87 : x
  2. Step 2: Convert to fraction form
    556,778.69/768,356.63 = 302,129.87/x
  3. Step 3: Cross multiply
    556,778.69x = 768,356.63 × 302,129.87
  4. Step 4: Simplify right side
    556,778.69x = 232,143,483,383.11
  5. Step 5: Solve for x
    x = 232,143,483,383.11/556,778.69
  6. Step 6: Final answer
    x = 416,940.32

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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.