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Finding the Fourth Proportional to 557,336.94, 769,172.41 and 315,662.51

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Solution

The fourth proportional to 557,336.94, 769,172.41 and 315,662.51 is: 435,641.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,336.94 : 769,172.41 = 315,662.51 : x
  2. Step 2: Convert to fraction form
    557,336.94/769,172.41 = 315,662.51/x
  3. Step 3: Cross multiply
    557,336.94x = 769,172.41 × 315,662.51
  4. Step 4: Simplify right side
    557,336.94x = 242,798,890,506.64
  5. Step 5: Solve for x
    x = 242,798,890,506.64/557,336.94
  6. Step 6: Final answer
    x = 435,641.12

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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.