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Finding the Fourth Proportional to 538,317.20, 805,920.60 and 328,365.20

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Solution

The fourth proportional to 538,317.20, 805,920.60 and 328,365.20 is: 491,599.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,317.20 : 805,920.60 = 328,365.20 : x
  2. Step 2: Convert to fraction form
    538,317.20/805,920.60 = 328,365.20/x
  3. Step 3: Cross multiply
    538,317.20x = 805,920.60 × 328,365.20
  4. Step 4: Simplify right side
    538,317.20x = 264,636,279,003.12
  5. Step 5: Solve for x
    x = 264,636,279,003.12/538,317.20
  6. Step 6: Final answer
    x = 491,599.15

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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.