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Finding the Fourth Proportional to 539,813.43, 744,942.69 and 298,112.40

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Solution

The fourth proportional to 539,813.43, 744,942.69 and 298,112.40 is: 411,395.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,813.43 : 744,942.69 = 298,112.40 : x
  2. Step 2: Convert to fraction form
    539,813.43/744,942.69 = 298,112.40/x
  3. Step 3: Cross multiply
    539,813.43x = 744,942.69 × 298,112.40
  4. Step 4: Simplify right side
    539,813.43x = 222,076,653,178.36
  5. Step 5: Solve for x
    x = 222,076,653,178.36/539,813.43
  6. Step 6: Final answer
    x = 411,395.20

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1.5x scale

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.