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Finding the Fourth Proportional to 575,345.11, 793,986.69 and 320,668.96

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Solution

The fourth proportional to 575,345.11, 793,986.69 and 320,668.96 is: 442,528.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,345.11 : 793,986.69 = 320,668.96 : x
  2. Step 2: Convert to fraction form
    575,345.11/793,986.69 = 320,668.96/x
  3. Step 3: Cross multiply
    575,345.11x = 793,986.69 × 320,668.96
  4. Step 4: Simplify right side
    575,345.11x = 254,606,886,136.14
  5. Step 5: Solve for x
    x = 254,606,886,136.14/575,345.11
  6. Step 6: Final answer
    x = 442,528.98

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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.