Home / 821,462.10-1,231,271.55-348,066.90

Finding the Fourth Proportional to 821,462.10, 1,231,271.55 and 348,066.90

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Solution

The fourth proportional to 821,462.10, 1,231,271.55 and 348,066.90 is: 521,709.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,462.10 : 1,231,271.55 = 348,066.90 : x
  2. Step 2: Convert to fraction form
    821,462.10/1,231,271.55 = 348,066.90/x
  3. Step 3: Cross multiply
    821,462.10x = 1,231,271.55 × 348,066.90
  4. Step 4: Simplify right side
    821,462.10x = 428,564,871,466.70
  5. Step 5: Solve for x
    x = 428,564,871,466.70/821,462.10
  6. Step 6: Final answer
    x = 521,709.85

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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.