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Finding the Fourth Proportional to 555,007.34, 765,911.07 and 300,358.73

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Solution

The fourth proportional to 555,007.34, 765,911.07 and 300,358.73 is: 414,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,007.34 : 765,911.07 = 300,358.73 : x
  2. Step 2: Convert to fraction form
    555,007.34/765,911.07 = 300,358.73/x
  3. Step 3: Cross multiply
    555,007.34x = 765,911.07 × 300,358.73
  4. Step 4: Simplify right side
    555,007.34x = 230,048,076,278.14
  5. Step 5: Solve for x
    x = 230,048,076,278.14/555,007.34
  6. Step 6: Final answer
    x = 414,495.56

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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.