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Finding the Fourth Proportional to 550,789.48, 760,096.74 and 309,124.36

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Solution

The fourth proportional to 550,789.48, 760,096.74 and 309,124.36 is: 426,595.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,789.48 : 760,096.74 = 309,124.36 : x
  2. Step 2: Convert to fraction form
    550,789.48/760,096.74 = 309,124.36/x
  3. Step 3: Cross multiply
    550,789.48x = 760,096.74 × 309,124.36
  4. Step 4: Simplify right side
    550,789.48x = 234,964,418,290.59
  5. Step 5: Solve for x
    x = 234,964,418,290.59/550,789.48
  6. Step 6: Final answer
    x = 426,595.69

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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.