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Finding the Fourth Proportional to 538,303.60, 807,455.40 and 509,273.20

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Solution

The fourth proportional to 538,303.60, 807,455.40 and 509,273.20 is: 763,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,303.60 : 807,455.40 = 509,273.20 : x
  2. Step 2: Convert to fraction form
    538,303.60/807,455.40 = 509,273.20/x
  3. Step 3: Cross multiply
    538,303.60x = 807,455.40 × 509,273.20
  4. Step 4: Simplify right side
    538,303.60x = 411,215,395,415.28
  5. Step 5: Solve for x
    x = 411,215,395,415.28/538,303.60
  6. Step 6: Final answer
    x = 763,909.80

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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.