Home / 428,924.68-591,987.02-237,999.58

Finding the Fourth Proportional to 428,924.68, 591,987.02 and 237,999.58

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Solution

The fourth proportional to 428,924.68, 591,987.02 and 237,999.58 is: 328,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,924.68 : 591,987.02 = 237,999.58 : x
  2. Step 2: Convert to fraction form
    428,924.68/591,987.02 = 237,999.58/x
  3. Step 3: Cross multiply
    428,924.68x = 591,987.02 × 237,999.58
  4. Step 4: Simplify right side
    428,924.68x = 140,892,659,455.49
  5. Step 5: Solve for x
    x = 140,892,659,455.49/428,924.68
  6. Step 6: Final answer
    x = 328,478.79

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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.