Home / 813,723.96-1,123,005.30-451,261.40

Finding the Fourth Proportional to 813,723.96, 1,123,005.30 and 451,261.40

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Solution

The fourth proportional to 813,723.96, 1,123,005.30 and 451,261.40 is: 622,777.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,723.96 : 1,123,005.30 = 451,261.40 : x
  2. Step 2: Convert to fraction form
    813,723.96/1,123,005.30 = 451,261.40/x
  3. Step 3: Cross multiply
    813,723.96x = 1,123,005.30 × 451,261.40
  4. Step 4: Simplify right side
    813,723.96x = 506,768,943,885.42
  5. Step 5: Solve for x
    x = 506,768,943,885.42/813,723.96
  6. Step 6: Final answer
    x = 622,777.46

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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.