Home / 538,334.82-742,668.62-320,421.31

Finding the Fourth Proportional to 538,334.82, 742,668.62 and 320,421.31

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Solution

The fourth proportional to 538,334.82, 742,668.62 and 320,421.31 is: 442,042.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,334.82 : 742,668.62 = 320,421.31 : x
  2. Step 2: Convert to fraction form
    538,334.82/742,668.62 = 320,421.31/x
  3. Step 3: Cross multiply
    538,334.82x = 742,668.62 × 320,421.31
  4. Step 4: Simplify right side
    538,334.82x = 237,966,849,242.62
  5. Step 5: Solve for x
    x = 237,966,849,242.62/538,334.82
  6. Step 6: Final answer
    x = 442,042.46

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1.5x scale

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.