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Finding the Fourth Proportional to 556,816.77, 768,407.64 and 302,167.96

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Solution

The fourth proportional to 556,816.77, 768,407.64 and 302,167.96 is: 416,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,816.77 : 768,407.64 = 302,167.96 : x
  2. Step 2: Convert to fraction form
    556,816.77/768,407.64 = 302,167.96/x
  3. Step 3: Cross multiply
    556,816.77x = 768,407.64 × 302,167.96
  4. Step 4: Simplify right side
    556,816.77x = 232,188,169,027.21
  5. Step 5: Solve for x
    x = 232,188,169,027.21/556,816.77
  6. Step 6: Final answer
    x = 416,992.05

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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.