Home / 813,811.56-1,123,054.50-451,235.64

Finding the Fourth Proportional to 813,811.56, 1,123,054.50 and 451,235.64

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Solution

The fourth proportional to 813,811.56, 1,123,054.50 and 451,235.64 is: 622,702.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,811.56 : 1,123,054.50 = 451,235.64 : x
  2. Step 2: Convert to fraction form
    813,811.56/1,123,054.50 = 451,235.64/x
  3. Step 3: Cross multiply
    813,811.56x = 1,123,054.50 × 451,235.64
  4. Step 4: Simplify right side
    813,811.56x = 506,762,216,062.38
  5. Step 5: Solve for x
    x = 506,762,216,062.38/813,811.56
  6. Step 6: Final answer
    x = 622,702.16

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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.