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Finding the Fourth Proportional to 555,525.09, 766,622.20 and 310,509.52

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Solution

The fourth proportional to 555,525.09, 766,622.20 and 310,509.52 is: 428,501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,525.09 : 766,622.20 = 310,509.52 : x
  2. Step 2: Convert to fraction form
    555,525.09/766,622.20 = 310,509.52/x
  3. Step 3: Cross multiply
    555,525.09x = 766,622.20 × 310,509.52
  4. Step 4: Simplify right side
    555,525.09x = 238,043,491,343.34
  5. Step 5: Solve for x
    x = 238,043,491,343.34/555,525.09
  6. Step 6: Final answer
    x = 428,501.78

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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.