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Finding the Fourth Proportional to 538,985.20, 808,477.80 and 329,033.20

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Solution

The fourth proportional to 538,985.20, 808,477.80 and 329,033.20 is: 493,549.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,985.20 : 808,477.80 = 329,033.20 : x
  2. Step 2: Convert to fraction form
    538,985.20/808,477.80 = 329,033.20/x
  3. Step 3: Cross multiply
    538,985.20x = 808,477.80 × 329,033.20
  4. Step 4: Simplify right side
    538,985.20x = 266,016,037,662.96
  5. Step 5: Solve for x
    x = 266,016,037,662.96/538,985.20
  6. Step 6: Final answer
    x = 493,549.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.