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Finding the Fourth Proportional to 539,709.42, 744,810.60 and 298,007.28

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Solution

The fourth proportional to 539,709.42, 744,810.60 and 298,007.28 is: 411,256.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,709.42 : 744,810.60 = 298,007.28 : x
  2. Step 2: Convert to fraction form
    539,709.42/744,810.60 = 298,007.28/x
  3. Step 3: Cross multiply
    539,709.42x = 744,810.60 × 298,007.28
  4. Step 4: Simplify right side
    539,709.42x = 221,958,981,021.17
  5. Step 5: Solve for x
    x = 221,958,981,021.17/539,709.42
  6. Step 6: Final answer
    x = 411,256.45

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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.