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Finding the Fourth Proportional to 555,012.50, 765,917.24 and 300,363.69

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Solution

The fourth proportional to 555,012.50, 765,917.24 and 300,363.69 is: 414,501.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,012.50 : 765,917.24 = 300,363.69 : x
  2. Step 2: Convert to fraction form
    555,012.50/765,917.24 = 300,363.69/x
  3. Step 3: Cross multiply
    555,012.50x = 765,917.24 × 300,363.69
  4. Step 4: Simplify right side
    555,012.50x = 230,053,729,114.49
  5. Step 5: Solve for x
    x = 230,053,729,114.49/555,012.50
  6. Step 6: Final answer
    x = 414,501.89

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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.