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Finding the Fourth Proportional to 555,729.15, 766,906.99 and 301,080.34

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Solution

The fourth proportional to 555,729.15, 766,906.99 and 301,080.34 is: 415,491.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,729.15 : 766,906.99 = 301,080.34 : x
  2. Step 2: Convert to fraction form
    555,729.15/766,906.99 = 301,080.34/x
  3. Step 3: Cross multiply
    555,729.15x = 766,906.99 × 301,080.34
  4. Step 4: Simplify right side
    555,729.15x = 230,900,617,503.51
  5. Step 5: Solve for x
    x = 230,900,617,503.51/555,729.15
  6. Step 6: Final answer
    x = 415,491.28

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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.