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Finding the Fourth Proportional to 551,077.52, 760,486.68 and 309,360.56

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Solution

The fourth proportional to 551,077.52, 760,486.68 and 309,360.56 is: 426,917.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,077.52 : 760,486.68 = 309,360.56 : x
  2. Step 2: Convert to fraction form
    551,077.52/760,486.68 = 309,360.56/x
  3. Step 3: Cross multiply
    551,077.52x = 760,486.68 × 309,360.56
  4. Step 4: Simplify right side
    551,077.52x = 235,264,585,197.34
  5. Step 5: Solve for x
    x = 235,264,585,197.34/551,077.52
  6. Step 6: Final answer
    x = 426,917.41

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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.