Home / 671,921.28-1,007,918.64-272,502.72

Finding the Fourth Proportional to 671,921.28, 1,007,918.64 and 272,502.72

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Solution

The fourth proportional to 671,921.28, 1,007,918.64 and 272,502.72 is: 408,768.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,921.28 : 1,007,918.64 = 272,502.72 : x
  2. Step 2: Convert to fraction form
    671,921.28/1,007,918.64 = 272,502.72/x
  3. Step 3: Cross multiply
    671,921.28x = 1,007,918.64 × 272,502.72
  4. Step 4: Simplify right side
    671,921.28x = 274,660,570,938.70
  5. Step 5: Solve for x
    x = 274,660,570,938.70/671,921.28
  6. Step 6: Final answer
    x = 408,768.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.