Home / 928,142.89-1,391,820.66-329,254.81

Finding the Fourth Proportional to 928,142.89, 1,391,820.66 and 329,254.81

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Solution

The fourth proportional to 928,142.89, 1,391,820.66 and 329,254.81 is: 493,742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,142.89 : 1,391,820.66 = 329,254.81 : x
  2. Step 2: Convert to fraction form
    928,142.89/1,391,820.66 = 329,254.81/x
  3. Step 3: Cross multiply
    928,142.89x = 1,391,820.66 × 329,254.81
  4. Step 4: Simplify right side
    928,142.89x = 458,263,646,962.38
  5. Step 5: Solve for x
    x = 458,263,646,962.38/928,142.89
  6. Step 6: Final answer
    x = 493,742.56

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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.