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Finding the Fourth Proportional to 556,928.31, 768,561.77 and 302,279.56

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Solution

The fourth proportional to 556,928.31, 768,561.77 and 302,279.56 is: 417,146.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,928.31 : 768,561.77 = 302,279.56 : x
  2. Step 2: Convert to fraction form
    556,928.31/768,561.77 = 302,279.56/x
  3. Step 3: Cross multiply
    556,928.31x = 768,561.77 × 302,279.56
  4. Step 4: Simplify right side
    556,928.31x = 232,320,513,668.42
  5. Step 5: Solve for x
    x = 232,320,513,668.42/556,928.31
  6. Step 6: Final answer
    x = 417,146.17

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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.