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Finding the Fourth Proportional to 559,578.42, 772,215.72 and 304,929.60

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Solution

The fourth proportional to 559,578.42, 772,215.72 and 304,929.60 is: 420,801.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,578.42 : 772,215.72 = 304,929.60 : x
  2. Step 2: Convert to fraction form
    559,578.42/772,215.72 = 304,929.60/x
  3. Step 3: Cross multiply
    559,578.42x = 772,215.72 × 304,929.60
  4. Step 4: Simplify right side
    559,578.42x = 235,471,430,613.31
  5. Step 5: Solve for x
    x = 235,471,430,613.31/559,578.42
  6. Step 6: Final answer
    x = 420,801.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.