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Finding the Fourth Proportional to 538,909.20, 808,363.80 and 529,693.20

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Solution

The fourth proportional to 538,909.20, 808,363.80 and 529,693.20 is: 794,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,909.20 : 808,363.80 = 529,693.20 : x
  2. Step 2: Convert to fraction form
    538,909.20/808,363.80 = 529,693.20/x
  3. Step 3: Cross multiply
    538,909.20x = 808,363.80 × 529,693.20
  4. Step 4: Simplify right side
    538,909.20x = 428,184,807,986.16
  5. Step 5: Solve for x
    x = 428,184,807,986.16/538,909.20
  6. Step 6: Final answer
    x = 794,539.80

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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.