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Finding the Fourth Proportional to 551,195.73, 760,630.39 and 309,488.49

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Solution

The fourth proportional to 551,195.73, 760,630.39 and 309,488.49 is: 427,083.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,195.73 : 760,630.39 = 309,488.49 : x
  2. Step 2: Convert to fraction form
    551,195.73/760,630.39 = 309,488.49/x
  3. Step 3: Cross multiply
    551,195.73x = 760,630.39 × 309,488.49
  4. Step 4: Simplify right side
    551,195.73x = 235,406,350,075.49
  5. Step 5: Solve for x
    x = 235,406,350,075.49/551,195.73
  6. Step 6: Final answer
    x = 427,083.04

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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.