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Finding the Fourth Proportional to 538,302.60, 807,453.90 and 509,272.20

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Solution

The fourth proportional to 538,302.60, 807,453.90 and 509,272.20 is: 763,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,302.60 : 807,453.90 = 509,272.20 : x
  2. Step 2: Convert to fraction form
    538,302.60/807,453.90 = 509,272.20/x
  3. Step 3: Cross multiply
    538,302.60x = 807,453.90 × 509,272.20
  4. Step 4: Simplify right side
    538,302.60x = 411,213,824,051.58
  5. Step 5: Solve for x
    x = 411,213,824,051.58/538,302.60
  6. Step 6: Final answer
    x = 763,908.30

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Double scale
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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.