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Finding the Fourth Proportional to 551,370.30, 760,856.22 and 309,646.65

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Solution

The fourth proportional to 551,370.30, 760,856.22 and 309,646.65 is: 427,292.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,370.30 : 760,856.22 = 309,646.65 : x
  2. Step 2: Convert to fraction form
    551,370.30/760,856.22 = 309,646.65/x
  3. Step 3: Cross multiply
    551,370.30x = 760,856.22 × 309,646.65
  4. Step 4: Simplify right side
    551,370.30x = 235,596,579,654.66
  5. Step 5: Solve for x
    x = 235,596,579,654.66/551,370.30
  6. Step 6: Final answer
    x = 427,292.84

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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.