Home / 428,904.70-591,959.47-237,979.60

Finding the Fourth Proportional to 428,904.70, 591,959.47 and 237,979.60

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Solution

The fourth proportional to 428,904.70, 591,959.47 and 237,979.60 is: 328,451.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,904.70 : 591,959.47 = 237,979.60 : x
  2. Step 2: Convert to fraction form
    428,904.70/591,959.47 = 237,979.60/x
  3. Step 3: Cross multiply
    428,904.70x = 591,959.47 × 237,979.60
  4. Step 4: Simplify right side
    428,904.70x = 140,874,277,886.81
  5. Step 5: Solve for x
    x = 140,874,277,886.81/428,904.70
  6. Step 6: Final answer
    x = 328,451.23

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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.